Herbicidal composition

ABSTRACT

To provide a herbicidal composition which is highly safe to crop plants and which is capable of controlling weeds problematic in e.g. paddy fields, upland fields and non-agricultural fields over a wide range of from preemergence to postemergence. 
     A herbicidal composition comprising the following Component A which is at least one compound selected from the group consisting of isoxazoline derivatives of the formula I and their salts, and the following Component B, as active ingredients: 
     
       
         
         
             
             
         
       
     
     wherein each of R 1  and R 2  which are independent of each other, is a hydrogen atom, a C 1 -C 10  alkyl group, a C 3 -C 8  cycloalkyl group or a C 3 -C 8  cycloalkyl C 1 -C 3  alkyl group, each of R 3  and R 4  which are independent of each other, is a hydrogen atom, a C 1 -C 10  alkyl group, a C 3 -C 8  cycloalkyl group, or R 1 , R 2 , R 3  and R 4  may form a 5- to 8-membered ring together with the carbon atoms to which they are bonded, each of R 5  and R 6  which are independent of each other, is a hydrogen atom or a C 1 -C 10  alkyl group, Y is a 5- or 6-membered aromatic heterocyclic or aromatic condensed heterocyclic group having an optional hetero atom selected from the group consisting of a nitrogen atom, an oxygen atom and a sulfur atom,
 
Component B:
 
     Imazaquin, diuron, sulfentrazone, sulcotrione, norflurazon, clomazone, dimethenamid-P, prosulfocarb, isoproturon, trifluralin or triallate.

TECHNICAL FIELD

The present invention relates to a novel herbicidal composition.

BACKGROUND ART

It is disclosed in Patent Document 1 that isoxazoline derivatives or their salts as compounds of Component A to be incorporated in the herbicidal composition of the present invention are safe to rice, wheat, barley, corn, grain sorghum, soybean, cotton, sugar beet, lawn grass, fruits and the like and have excellent herbicidal effects by themselves.

Further, compounds of the after-mentioned Components B and C to be incorporated in the herbicidal composition of the present invention, are known compounds having herbicidal activities, and they are disclosed, for example, in Non-patent Documents 1 to 3.

Further, a group of compounds of the after-mentioned Component D to be incorporated in the herbicidal composition of the present invention, as the case requires, are compounds known as phytotoxicity-reducing agents, and such compounds are disclosed in Non-patent Documents 1 and 2.

Patent Document 2 discloses Examples wherein compounds represented by the formula [I] can be mixed with known herbicidal compounds.

On the other hand, various herbicides have been developed for practical use by the research and development over many years, and such herbicides have contributed to saving of weed-controlling operations or to the improvement of productivity of agricultural or horticultural crop plants. However, even today, it is desired to develop a novel herbicide which is safer and has excellent herbicidal characteristics.

Further, a herbicide to be used for crop plants is desired to be an agent which exhibits sufficient herbicidal effects against a wide range of weeds at a low dose by application to soil or foliage and yet exhibits high selectivity between crop plants and weeds.

Patent Document 1: WO2002/062770

Patent Document 2: WO2004/014138

Non-patent Document 1: Pesticide Manual 14th edition, British Crop Council

Non-patent Document 2: SHIBUYA INDEX 12th Edition, published by SHIBUYA INDEX RESEARCH ASSOCIATION

Non-patent Document 3: Monthly Fine Chemical, vol 35, No. 7 (2006), published by CMC

DISCLOSURE OF THE INVENTION Object to be Accomplished by the Invention

It is an object of the present invention to provide a herbicidal composition comprising an isoxazoline derivative represented by the following formula [I] or its salt in order to control unwanted weeds in cultivation of crop plants or useful plants.

Means to Accomplish the Object

The present inventors have conducted an extensive research to accomplish the above object and as a result, have found that by the combined use of Component A which is a compound selected from isoxazoline derivatives represented by the following formula [I] and their salts, and a herbicide shown by the following Component B; by the combined use of Components A and B and a herbicide shown by the following Component C; by the combined use of Components A and B and a phytotoxicity-reducing agent shown by the following Component D; or by the combined use of Components A, B, C and D, not only the respective herbicidal effects are obtainable merely additively, but also synergistic herbicidal effects can be obtained, or the phytotoxicity can be synergistically reduced.

Namely, the present inventors have found that by the combined use of two or more such agents, the herbicidal spectrum can be broadened as compared with the herbicidal ranges of the respective agents, and at the same time, the herbicidal effects can be attained at an early stage; the effects are prolonged; further, sufficient effects are obtainable at a dose lower than the dose when they are used individually; at the same time, safety to rice, wheat, barley, corn, grain sorghum, soybean, cotton, sugar beet, lawn grass, fruits or the like is secured; and sufficient herbicidal effects can be obtained by single application. The present invention has been accomplished on the basis of such discoveries.

The present invention provides the following.

1. A herbicidal composition comprising the following Component A which is at least one compound selected from the group consisting of isoxazoline derivatives of the formula [I] and their salts, and the following Component B, as active ingredients:

wherein each of R¹ and R² which are independent of each other, is a hydrogen atom, a C₁-C₁₀ alkyl group, a C₃-C₈ cycloalkyl group or a C₃-C₈ cycloalkyl C₁-C₃ alkyl group, or R¹ and R² together form a C₃-C₇ spiro ring together with the carbon atom to which they are bonded;

each of R³ and R⁴ which are independent of each other, is a hydrogen atom, a C₁-C₁₀ alkyl group, a C₃-C₈ cycloalkyl group, or R³ and R⁴ together form a C₃-C₇ spiro ring together with the carbon atom to which they are bonded, or R¹, R², R³ and R⁴ may form a 5- to 8-membered ring together with the carbon atoms to which they are bonded;

each of R⁵ and R⁶ which are independent of each other, is a hydrogen atom or a C₁-C₁₀ alkyl group;

Y is a 5- or 6-membered aromatic heterocyclic or aromatic condensed heterocyclic group having an optional hetero atom selected from the group consisting of a nitrogen atom, an oxygen atom and a sulfur atom, such a heterocyclic group may be substituted by from 0 to 6 same or different groups selected from the following substituent group α, adjacent two alkyl groups, alkoxy groups, alkyl and alkoxy groups, alkyl and alkylthio groups, alkyl and alkylsulfonyl groups, alkyl and monoalkylamino groups, or alkyl and dialkylamino groups may be bonded to each other to form a 5- to 8-membered ring which may be substituted by from 1 to 4 halogen atoms, and when the hetero atom of such a heterocyclic group is a nitrogen atom, it may be oxidized to be an N-oxide;

n is an integer of from 0 to 2;

Substituent Group α:

a hydroxyl group, a thiol group, a halogen atom, a C₁-C₁₀ alkyl group, a C₁-C₁₀ alkyl group mono-substituted by an optional group selected from the following substituent group β, a C₁-C₄ haloalkyl group, a C₃-C₈ cycloalkyl group, a C₁-C₁₀ alkoxy group, a C₁-C₁₀ alkoxy group mono-substituted by an optional group selected from the following substituent group γ, a C₁-C₄ haloalkoxy group, a C₃-C₈ cycloalkyloxy group, a C₃-C₈ cycloalkyl C₁-C₃ alkyloxy group, a C₁-C₁₀ alkylthio group, a C₁-C₁₀ alkylthio group mono-substituted by an optional group selected from the following substituent group γ, a C₁-C₄ haloalkylthio group, a C₂-C₆ alkenyl group, a C₂-C₆ alkenyloxy group, a C₂-C₆ alkynyl group, a C₂-C₆ alkynyloxy group, a C₁-C₁₀ alkylsulfinyl group, a C₁-C₁₀ alkylsulfinyl group mono-substituted by an optional group selected from the following substituent group γ, a C₁-C₁₀ alkylsulfonyl group, a C₁-C₁₀ alkylsulfonyl group mono-substituted by an optional group selected from the following substituent group γ, a C₁-C₄ haloalkylsulfinyl group, a C₁-C₁₀ alkylsulfonyloxy group mono-substituted by an optional group selected from the following substituent group γ, a C₁-C₄ haloalkylsulfonyl group, a C₁-C₁₀ alkylsulfonyloxy group, a C₁-C₄ haloalkylsulfonyloxy group, a phenyl group which may be substituted, a phenoxy group which may be substituted, a phenylthio group which may be substituted, an aromatic heterocyclic group which may be substituted, an aromatic heterocyclic oxy group which may be substituted, an aromatic heterocyclic thio group which may be substituted, a phenylsulfinyl group which may be substituted, a phenylsulfonyl group which may be substituted, an aromatic heterocyclic sulfonyl group which may be substituted, a phenylsulfonyloxy group which may be substituted, an acyl group, a C₁-C₄ haloalkylcarbonyl group, a benzylcarbonyl group which may be substituted, a benzoyl group which may be substituted, a carboxyl group, a C₁-C₁₀ alkoxycarbonyl group, a benzyloxycarbonyl group which may be substituted, a phenoxycarbonyl group which may be substituted, a cyano group, a carbamoyl group (a nitrogen atom of this group may independently be substituted by a C₁-C₁₀ alkyl group or a phenyl group which may be substituted), a C₁-C₆ acyloxy group, a C₁-C₄ haloalkylcarbonyloxy group, a benzylcarbonyloxy group which may be substituted, a benzoyloxy group which may be substituted, a nitro group, and an amino group (a nitrogen atom of this group may independently be substituted by a C₁-C₁₀ alkyl group, a phenyl group which may be substituted, a C₁-C₆ acyl group, a C₁-C₄ haloalkylcarbonyl group, a benzylcarbonyl group which may be substituted, a benzoyl group which may be substituted, a C₁-C₁₀ alkylsulfonyl group, a C₁-C₄ haloalkylsulfonyl group, a benzylsulfonyl group which may be substituted, or a phenylsulfonyl group which may be substituted);

Substituent Group β:

a hydroxyl group, a C₃-C₈ cycloalkyl group (this group may be substituted by a halogen atom or an alkyl group), a C₁-C₁₀ alkoxy group, a C₁-C₁₀ alkylthio group, a C₁-C₁₀ alkylksulfonyl group, a C₁-C₁₀ alkoxycarbonyl group, a C₂-C₆ haloalkenyl group, an amino group (a nitrogen atom of this group may independently be substituted by a C₁-C₁₀ alkyl group, a C₁-C₆ acyl group, a C₁-C₄ haloalkylcarbonyl group, a C₁-C₁₀ alkylsulfonyl group, or a C₁-C₄ haloalkylsulfonyl group), a carbamoyl group (a nitrogen atom of this group may independently be substituted by a C₁-C₁₀ alkyl group), a C₁-C₆ acyl group, a C₁-C₄ haloalkylcarbonyl group, a C₁-C₁₀ alkoxyimino group, a cyano group, a phenyl group which may be substituted, and a phenoxy group which may be substituted;

Substituent Group γ:

a C₁-C₁₀ alkoxycarbonyl group, a phenyl group which may be substituted, an aromatic heterocyclic group which may be substituted, a cyano group, and a carbamoyl group (a nitrogen atom of this group may independently be substituted by a C₁-C₁₀ alkyl group);

Component B:

At least one compound selected from the group consisting of:

(B-1) Acetyl CoA Carboxylase Inhibitors

(a) Aryloxyphenoxypropionic Acid Compounds:

Clodinafop-propargyl, cyhalofop-butyl, diclofop-methyl, fenoxaprop-P-ethyl, fenoxaprop-ethyl, fluazifop-butyl, fluazifop-P-butyl, haloxyfop, haloxyfop-P, haloxyfop-P-methyl, metamifop, propaquizafop, quizalofop-ethyl, quizalofop-P, quizalofop-P-ethyl, quizalofop-P-tefuryl.

(b) Cyclohexanedione Compounds:

Alloxydim, butroxydim, clethodim, cycloxydim, profoxydim, sethoxydim, tepraloxydim, tralkoxydim.

(c) Phenylpyrazoline Compounds:

Aminopyralid.

(B-2) Branched Chain Amino Acid Synthesis Inhibitors

(a) Sulfonylurea Compounds:

Amidosulfuron, azimsulfuron, bensulfuron-methyl, chlorimuron-ethyl, chlorsulfuron, cinosulfuron, cyclosulfamuron, ethametsulfuron-methyl, ethoxysulfuron, flazasulfuron, flupyrsulfuron-methyl-sodium, foramsulfuron, imazosulfuron, iodosulfulon-methyl-sodium, mesosulfuron-methyl, metsulfuron-methyl, oxasulfuron, pyrazosulfuron-ethyl, sulfometuron-methyl, sulfosulfuron, triasulfuron, tribenuron-methyl, trifloxysulfuron-sodium, triflusulfuron-methyl, tritosulfuron.

(b) Imidazolinone Compounds:

Imazamethabenz-methyl, imazamox, imazapic, Imazaquin.

(c) Triazolopyrimidine Compounds:

Diclosulam, florasulam, metosulam, penoxsulam.

(d) Pyrimidinyloxy(thio)benzoic Acid Compounds:

Bispyribac-sodium, pyribenzoxim, pyriftalid, pyriminobac-methyl, pyrithiobac-sodium.

(e) Sulfonylaminocarbonyltriazolinone Compound:

Flucarbazone-sodium.

(B-3) Photosynthesis II Inhibitors

(a) Triazine Compounds:

Ametryn, dimethametryn, desmetryne, prometryn, propazine, simetryn, terbumeton, terbuthylazine, terbutryn, trietazine.

(b) Triazinone Compounds:

Hexazinone, metamitron.

(c) Triazolinone Compounds:

Amicarbazone.

(d) Uracil Compounds:

Bromacil, lenacil, terbacil.

(e) Pyridazinone Compounds:

Chloridazon.

(f) Phenylcarbamate Compounds:

Desmedipham, phenmedipham.

(g) Urea Compounds:

Chlorbromuron, chlorotoluron, chloroxuron, dimefuron, diuron, ethidimuron, fenuron, fluometuron, isoproturon, isouron, methabenzthiazuron, metobromuron, metoxuron, monolinuron, neburon, siduron, tebuthiuron.

(h) Anilide Compounds:

Pentanochlor, propanil.

(i) Hydroxybenzonitrile Compounds:

Ioxynil, bromofenoxim.

(j) Benzothiadiazinone Compounds:

Bentazone.

(k) Phenylpyridazine Compounds:

Pyridate, pyridafol.

(B-4) Photosynthesis I Inhibitors

(a) Bipyridinium Compounds:

Diquat, paraquat.

(B-5) Protoporphrin Synthesis Inhibitors

(a) Diphenyl Ether Compounds:

Acifluorfen, bifenox, chlomethoxyfen, fluoroglycofen-ethyl, fomesafen, lactofen, oxyfluorfen.

(b) Phenylphthalimide Compounds:

Cinidon-ethyl, flumiclorac-pentyl.

(c) Thiadiazole Compounds:

Fluthiacet-methyl, thidiazimin.

(d) Oxadiazole Compounds:

Oxadiargyl, oxadiazon.

(e) Triazolinone Compounds:

Azafenidin, sulfentrazone.

(f) Pyrimidinedione Compounds:

Butafenacil, benzfendizone.

(g) Oxazolidinedione Compounds:

Pentoxazone.

(h) Phenylpyrazole Compounds:

Pyraflufen-ethyl, fluazolate.

(i) Other Compounds:

Pyraclonil, profluazol, flufenpyr-ethyl.

(B-6) 4-Hydroxyphenylpyruvate Dioxygenase Inhibitors, Carotenoid Synthesis Inhibitors

(a) Pyridazinone Compounds:

Norflurazon.

(b) Triketone Compounds:

Sulcotrione.

(c) Isoxazole Compounds:

Isoxachlortole.

(d) Pyrazole Compounds:

Benzofenap, pyrazolynate, pyrazoxyfen.

(e) Triazole Compounds:

Amitrole.

(f) Isoxazolidinone Compounds:

Clomazone.

(g) Pyridine Carboxamide Compounds:

Picolinafen.

(h) Diphenyl Ether Compounds:

Aclonifen.

(i) Urea Compounds:

Fluometuron.

(j) Other Compounds:

Beflubutamid, fluridone, fluorochloridone, flurtamone, benzobicyclon.

(B-7) 5-Enolpyruvylshikimate-5-Phosphate Synthesis Inhibitors

(a) Glycine Compounds:

Sulfosate.

(B-8) Glutamine Synthesis Inhibitors

(a) Phosphinic Acid Compounds:

Bilanafos.

(B-9) Folic Acid Synthesis Inhibitors

(a) Carbamate Compounds:

Asulam.

(B-10) Cell Division Inhibitors, Ultralong Chain Fatty Acid Synthesis Inhibitors

(a) Dinitroaniline Compounds:

Benfluralin, butralin, dinitramine, ethalfluralin, oryzalin, trifluralin.

(b) Pyridine Compounds:

Dithiopyr, thiazopyr.

(c) Benzenedicarboxylic Acid Compounds:

Chlorthal-dimethyl.

(d) Phosphoroamidate Compounds:

Butamifos, amiprophos-methyl.

(e) Benzamide Compounds:

Propyzamide, tebutam.

(f) Carbamate Compounds:

Carbetamide, chlorpropham, propham.

(g) Chloroacetamide Compounds:

Acetochlor, alachlor, butachlor, dimethachlor, dimethenamid, metazachlor, pethoxamid, pretilachlor, propachlor, propisochlor, S-metolachlor, thenylchlor.

(h) Oxyacetamide Compounds:

Flufenacet, mefenacet.

(i) Tetrazolinone Compounds:

Fentrazamide.

(j) Alkaneamide Compounds:

Diphenamid, naproanilide, napropamide.

(i) Other Compounds:

Anilofos, cafenstrole, piperophos.

(B-11) Cellulose Synthesis Inhibitors

(a) Benzonitrile Compounds:

Dichlobenil, chlorthiamid.

(b) Benzamide Compounds:

Isoxaben.

(c) Triazolocarboxyamide Compounds:

Flupoxame.

(B-12) Membrane Disruption Agents

(a) Dinitrophenol Compounds:

Dinoterb, DNOC, dinoterb.

(B-13) Fatty Acid Synthesis Inhibitors

(a) Thiocarbamate Compounds:

Butylate, cycloate, dimepiperate, EPTC, esprocarb, molinate, orbencarb, pebulate, prosulfocarb, thiobencarb, tiocarbazil, triallate, vernolate.

(b) Benzofuran Compounds:

Benfuresate, ethofumesate.

(c) Chlorocarboxylic Acid Compounds:

TCA, dalapon, flupropanate.

(d) Phosphorodithioate Compounds:

Bensulide.

(B-14) Auxin Synthesis Inhibitors

(a) Phenoxycarboxylic Acid Compounds:

Clomeprop, 2,4-D, 2,4-DB, dichlorprop, dichlorprop-P, MCPA, MCPB, mecoprop, mecoprop-P, MCPA-thioethyl.

(b) Benzoic Acid Compounds:

2,3,6-TBA, chloramben.

(c) Pyridine Carboxylic Acid Compounds:

Fluoroxypyr, picloram, triclopyr.

(d) Quinoline Carboxylic Acid Compounds:

Quinclorac.

(e) Benzothiazole Compounds:

Benazolin.

(B-15) Auxin Transport Inhibitors

(a) Semicarbazone Compounds:

Diflufenzopyr.

(b) Phthalamate Compounds:

Naptalam.

(B-16) Other Inhibitors

Difenzoquat, flamprop-M, bromobutide, oxaziclomefone, cinmethylin, etobenzanid, fosamine, cumyluron, daimuron, methyl-dimuron, indanofan, pyributicarb, pyrimisulfan, HC-252, forchlorfenuron, thidiazuron, pyrasulfotole, maleic hydrazide, diflumetorim, fenclorim, ancymidol, flurprimidol, chlormequat, mepiquatchloride, quinmerac, propoxycarbazone-sodium, propoxycarbazone, flucetosulfuron, tefuryltrion, karbutilate, metobenzuron, prodiamine, pyroxsulam, triaziflam, pinoxaden, bencarbazone, trinexapac-ethyl and prohexadione-calcium, and their salts and analogues such as acids, esters and amides.

2. The herbicidal composition according to the above 1, wherein Component A is a compound of the formula [I] wherein Y is a 5- or 6-membered aromatic heterocyclic group having a hetero atom selected from the group consisting of a nitrogen atom, an oxygen atom and a sulfur atom.

3. The herbicidal composition according to the above 1, wherein Component A is a compound of the formula [I] wherein Y is a thienyl group, a pyrazolyl group, an isoxazolyl group, an isothiazolyl group, a pyridyl group or a pyrimidinyl group.

4. The herbicidal composition according to the above 1, wherein Component A is a compound of the formula [I] wherein Y is a thiophen-3-yl group, a pyrazol-4-yl group, a pyrazol-5-yl group, an isoxazol-4-yl group, an isothiazol-4-yl group, a pyridin-3-yl group or a pyrimidin-5-yl group. 5. The herbicidal composition according to the above 1, wherein Component A is a compound of the formula [I] wherein Y is a pyrazol-4-yl group wherein the pyrazole ring is substituted at the 3- and 5-positions by the substituent group α and at the 1-position by a hydroxyl group, a C₁-C₁₀ alkyl group, a C₁-C₁₀ alkyl group mono-substituted by an optional group selected from the substituent group β, a C₁-C₄ haloalkyl group, a C₃-C₈ cycloalkyl group, a C₂-C₆ alkenyl group, a C₂-C₆ alkynyl group, a C₁-C₁₀ alkylsulfinyl group, a C₁-C₁₀ alkylsulfonyl group, a C₁-C₁₀ alkylsulfonyloxy group mono-substituted by an optional group selected from the substituent group γ, a C₁-C₄ haloalkylsulfonyl group, a phenyl group which may be substituted, an aromatic heterocyclic group which may be substituted, a phenylsulfonyl group which may be substituted, an aromatic heterocyclic sulfonyl group which may be substituted, an acyl group, a C₁-C₄ haloalkylcarbonyl group, a benzylcarbonyl group which may be substituted, a benzoyl group which may be substituted, a carboxyl group, a C₁-C₁₀ alkoxycarbonyl group, a benzyloxycarbonyl group which may be substituted, a phenoxycarbonyl group which may be substituted, a carbamoyl group (a nitrogen atom of this group may independently be substituted by a C₁-C₁₀ alkyl group or a phenyl group which may be substituted), or an amino group (a nitrogen atom of this group may independently be substituted by a C₁-C₁₀ alkyl group, a phenyl group which may be substituted, an acyl group, a C₁-C₄ haloalkylcarbonyl group, a benzylcarbonyl group which may be substituted, a benzoyl group which may be substituted, a C₁-C₁₀ alkylsulfonyl group, a C₁-C₄ haloalkylsulfonyl group, a benzylsulfonyl group which may be substituted, or a phenylsulfonyl group which may be substituted). 6. The herbicidal composition according to the above 1, wherein Component A is a compound of the formula [I] wherein Y is a pyrazol-5-yl group wherein the pyrazole ring is substituted at the 4-position by the substituent group α and at the 1-position by a hydroxyl group, a C₁-C₁₀ alkyl group, a C₁-C₁₀ alkyl group mono-substituted by an optional group selected from the substituent group β, a C₁-C₄ haloalkyl group, a C₃-C₈ cycloalkyl group, a C₂-C₆ alkenyl group, a C₂-C₆ alkynyl group, a C₁-C₁₀ alkylsulfinyl group, a C₁-C₁₀ alkylsulfonyl group, a C₁-C₁₀ alkylsulfonyl group mono-substituted by an optional group selected from the substituent group γ, a C₁-C₄ haloalkylsulfonyl group, a phenyl group which may be substituted, an aromatic heterocyclic group which may be substituted, a phenylsulfonyl group which may be substituted, an aromatic heterocyclic sulfonyl group which may be substituted, an acyl group, a C₁-C₄ haloalkylcarbonyl group, a benzylcarbonyl group which may be substituted, a benzoyl group which may be substituted, a carboxyl group, a C₁-C₁₀ alkoxycarbonyl group, a benzyloxycarbonyl group which may be substituted, a phenoxycarbonyl group which may be substituted, a carbamoyl group (a nitrogen atom of this group may independently be substituted by a C₁-C₁₀ alkyl group or a phenyl group which may be substituted), or an amino group (a nitrogen atom of this group may independently be substituted by a C₁-C₁₀ alkyl group, a phenyl group which may be substituted, an acyl group, a C₁-C₄ haloalkylcarbonyl group, a benzylcarbonyl group which may be substituted, a benzoyl group which may be substituted, a C₁-C₁₀ alkylsulfonyl group, a C₁-C₄ haloalkylsulfonyl group, a benzylsulfonyl group which may be substituted, or a phenylsulfonyl group which may be substituted). 7. The herbicidal composition according to the above 1, wherein Component A is a compound of the formula [I] wherein each of R¹ and R² is a methyl group, each of R³ and R⁴ is a hydrogen atom, and Y is a pyrazol-4-yl group wherein the pyrazole ring is substituted at the 1-, 3- and 5-positions independently by a C₁-C₄ alkyl group, a C₁-C₄ haloalkyl group or a C₁-C₄ haloalkoxy group.

8. The herbicidal composition according to the above 1, wherein Component A is 3-[(5-difluoromethoxy-1-methyl-3-trifluoromethylpyrazol-4-yl)methylsulfonyl]-4,5-dihydro-5,5-dimethylisoxazole.

9. The herbicidal composition according to any one of the above 1 to 8, wherein Component B is at least one compound selected from the group consisting of quizafop-ethyl, quizafop-P-ethyl, sethoxydim, pyrithiobac-sodium, bispyribac-sodium, pyrimisulfan, imazethapyr, imazaquin, chlorimuron-ethyl, diuron, bentazone, paraquat, sulfentrazone, fluthiacet-methyl, sulcotrione, norflurazon, clomazone, bilanafos, asulam, flufenacet, dimethenamid-P, prosulfocarb, thiobencarb, 2,4-D, clopyralid, ametryn, isoproturon, picolinafen, trifluralin, acetochlor and triallate.

10. The herbicidal composition according to any one of the above 1 to 8, wherein Component B is imazaquin, diuron, sulfentrazone, sulcotrione, norflurazon, clomazone, dimethenamid-P, prosulfocarb, isoproturon, trifluralin or triallate.

11. A herbicidal composition comprising the herbicidal composition as defined in any one of the above 1 to 10 and the following Component C, as active ingredients:

Component C:

At least one compound selected from the group consisting of atrazine, simazine, cyanazine, isoxaflutole, mesotrione, flumetsulam, imazethapyr, imazapyr, dicamba, clopyralid, prosulfuron, halosulfuron-methyl, rimsulfuron, bentazon, carfentrazone-ethyl, metribuzin, thifensulfuron-methyl, nicosulfuron, primisulfuron-methyl, cloransulam-methyl, glufosinate, glyphosate, sulfosate, pendimethalin, linuron, prometryne, diflufenican, flumioxazin, metolachlor, their salts and analogues.

12. A herbicidal composition comprising the herbicidal composition as defined in any one of the above 1 to 10 and the following Component D, as active ingredients:

Component D:

At least one compound selected from the group consisting of Cloquintocet-Mexyl, fenchlorazole, fenchlorazole-ethyl, mefenpyr, mefenpyr-diethyl, isoxadifen, isoxadifen-ethyl, furilazole, benoxacor, dichlormid, MON4660, oxabetrinil, cyometrinil, fenclorim, cyprosulfamide, naphthalic anhydride, Flurazole, their salts and analogues.

13. A herbicidal composition comprising the herbicidal composition as defined in the above 11 and Component D as defined in Claim 12, as active ingredients. 14. The herbicidal composition according to any one of the above 1 to 10, wherein the weight ratio of Component A:Component B is from 1:0.001 to 1:100. 15. The herbicidal composition according to the above 11, wherein the weight ratio of Component A:Component B:Component C is from 1:0.001:0.001 to 1:100:100. 16. The herbicidal composition according to the above 12, wherein the weight ratio of Component A:Component B:Component D is from 1:0.001:0.001 to 1:100:100. 17. The herbicidal composition according to the above 13, wherein the weight ratio of Component A:Component B:Component C:Component D is from 1:0.001:0.001:0.001 to 1:100:100:100.

18. A herbicidal composition comprising the herbicidal composition as defined in any one of the above 1 to 17 in an amount to show a herbicidal activity and at least one inert liquid carrier and/or solid carrier and, if necessary, further containing at least one surfactant. 19. A method for preparing the herbicidal composition as defined in any one of the above 1 to 18, which comprises mixing Component A and Component B; if necessary, Component C and/or Component D; at least one inert liquid carrier and/or solid carrier; and a surfactant. 20. A method for controlling unwanted plants, which comprises applying the active ingredients contained in the herbicidal composition as defined in any one of the above 1 to 18, simultaneously or dividedly, before, during and/or after germination of the unwanted plants.

EFFECTS OF THE INVENTION

The herbicidal composition of the present invention is not limited to a simple sum of activities obtainable by the individual components and provides herbicidal effects or phytotoxicity-reducing effects synergistically, whereby the dose of the agricultural chemicals can be reduced. Further, it is highly safe to crop plants and capable of controlling various weeds problematic in e.g. paddy fields, upland fields, non-agricultural fields, etc., over a wide range of from pre-emergence to post-emergence.

BEST MODE FOR CARRYING OUT THE INVENTION

Now, definitions of terms used in this specification will be shown below.

An expression like “C₁-C₁₀” means that in this case, the carbon number of a substituent following the expression is from 1 to 10.

The halogen atom represents a fluorine atom, a chlorine atom, a bromine atom or an iodine atom.

The C₁-C₁₀ alkyl group represents a straight chain or branched chain alkyl group having a carbon number of from 1 to 10, unless otherwise specified, and it may, for example, be a methyl group, an ethyl group, a n-propyl group, an isopropyl group, a n-butyl group, an isobutyl group, a sec-butyl group, a tert-butyl group, a n-pentyl group, an isopentyl group, a neopentyl group, a n-hexyl group, an isohexyl group, a 3,3-dimethylbutyl group, a heptyl group or an octyl group.

The C₃-C₈ cycloalkyl group represents a cycloalkyl group having a carbon number of from 3 to 8, and it may, for example, be a cyclopropyl group, a cyclobutyl group, a cyclopentyl group or a cyclohexyl group.

The C₃-C₈ cycloalkyl C₁-C₃ alkyl group (this group may be substituted by a halogen atom or an alkyl group) represents a C₁-C₃ alkyl group substituted by a C₃-C₈ cycloalkyl group which may be substituted by from 1 to 4 halogen atoms or a C₁-C₃ alkyl group, unless otherwise specified, and it may, for example, be a cyclopropylmethyl group, a 1-cyclopropylethyl group, a 2-cyclopropylethyl group, a 1-cyclopropylpropyl group, a 2-cyclopropylpropyl group, a 3-cyclopropylpropyl group, a cyclobutylmethyl group, a cyclopentylmethyl group, a cyclohexylmethyl group, a 2-chlorocyclopropyl methyl group, a 2,2-dichlorocyclopropylmethyl group, a 2-fluorocyclopropylmethyl group, a 2,2-difluorocyclopropylmethyl group, a 2-methylcyclopropylmethyl group, a 2,2-dimethylcyclopropylmethyl group or a 2-methylcyclopropylethyl group.

The C₃-C₈ cycloalkyl C₁-C₃ alkyl group represents an alkyl group having a carbon number of from 1 to 3, substituted by a cycloalkyl group having a carbon number of from 3 to 8, and it may, for example, be a cyclopropylmethyl group, a 1-cyclopropylethyl group, a 2-cyclopropylethyl group, a 1-cyclopropylpropyl group, a 2-cyclopropylpropyl group, a 3-cyclopropylpropyl group, a cyclobutylmethyl group, a cyclopentylmethyl group or a cyclohexylmethyl group.

The C₁-C₄ haloalkyl group represents a straight chain or branched chain alkyl group having a carbon number of from 1 to 4, independently substituted by from 1 to 9 halogen atoms, unless otherwise specified, and it may, for example, be a fluoromethyl group, a chloromethyl group, a bromomethyl group, a difluoromethyl group, a trifluoromethyl group, a 2,2-difluoroethyl group, a 2,2,2-trifluoroethyl group, or a pentafluoroethyl group.

The C₂-C₆ alkenyl group represents a straight chain or branched chain alkenyl group having a carbon number of from 2 to 6, and it may, for example, be an ethenyl group, a 1-propenyl group, a 2-propenyl group, an isopropenyl group, a 1-butenyl group, a 2-butenyl group, a 3-butenyl group or a 2-pentenyl group.

The C₂-C₆ alkynyl group represents a straight chain or branched chain alkynyl group having a carbon number of from 2 to 6, and it may, for example, be an ethynyl group, a 2-propynyl group, a 1-methyl-2-propynyl group, a 2-butynyl group, a 3-butynyl group, or a 2-methyl-3-butynyl group.

The C₂-C₆ haloalkenyl group represents a straight chain or branched chain alkenyl group having a carbon number of from 2 to 6, independently substituted by from 1 to 4 halogen atoms, unless otherwise specified, and it may, for example, be a 3-chloro-2-propenyl group or a 2-chloro-2-propenyl group.

The C₁-C₁₀ alkoxy group represents an (alkyl)-O-group wherein the alkyl moiety has the above meaning, and it may, for example, be a methoxy group, an ethoxy group, a n-propoxy group, an isopropoxy group, a tert-butoxy group, a n-butoxy group, a sec-butoxy group or an isobutoxy group.

The C₁-C₄ haloalkoxy group represents a (haloalkyl)-O-group wherein the haloalkyl moiety has the above meaning, and it may, for example, be a difluoromethoxy group, a trifluoromethoxy group, 2,2-difluoroethoxy group, or a 2,2,2-trifluoroethoxy group.

The C₃-C₈ cycloalkyloxy group represents a (cycloalkyl)-O-group wherein the cycloalkyl moiety has the above meaning, and it may, for example, be a cyclopropyloxy group, a cyclobutyloxy group, a cyclopentyloxy group, or a cyclohexyloxy group.

The C₃-C₈ cycloalkyl C₁-C₃ alkyloxy group represents a (cycloalkylalkyl)-O-group wherein the cycloalkylalkyl moiety has the above meaning, and it may, for example, be a cyclopropylmethoxy group, a 1-cyclopropylethoxy group, a 2-cyclopropylethoxy group, a 1-cyclopropylpropoxy group, a 2-cyclopropylpropoxy group, a 3-cyclopropylpropoxy group, a cyclobutylmethoxy group, a cyclopentylmethoxy group, or a cyclohexylmethoxy group.

The C₂-C₆ alkenyloxy group and the C₂-C₆ alkynyloxy group, represent an (alkenyl)-O-group and an (alkynyl)-O-group, wherein the alkenyl or alkynyl moiety has the above meaning, and they may, for example, be a 2-propenyloxy group, and a 2-propynyloxy group, respectively.

The C₁-C₁₀ alkoxyimino group represents an (alkoxy)-N=group wherein the alkoxy moiety has the above meaning, and it may, for example, be a methoxyimino group or an ethoxyimino group.

The C₁-C₁₀ alkylthio group, the C₁-C₁₀ alkylsulfinyl group and the C₁-C₁₀ alkylsulfonyl group represent an (alkyl)-S-group, an (alkyl)-SO-group and an (alkyl)-SO₂-group, wherein the alkyl moiety has the above meaning, and they may, for example, be a methylthio group, an ethylthio group, a n-propylthio group, an isopropylthio group, a methylsulfinyl group, a methylsulfonyl group, an ethylsulfonyl group, a n-propylsulfonyl group, or an isopropylsulfonyl group.

The C₁-C₁₀ alkylsulfonyloxy group represents an (alkylsulfonyl)-O-group wherein the alkylsulfonyl moiety has the above meaning, and it may, for example, be a methylsulfonyloxy group or an ethylsulfonyloxy group.

The C₁-C₁₀ alkoxycarbonyl group represents an (alkoxy)-CO-group wherein the alkoxy moiety has the above meaning, and it may, for example, be a methoxycarbonyl group, an ethoxycarbonyl group, a n-propoxycarbonyl group or an isopropoxycabonyl group.

The C₁-C₆ acyl group represents a straight chain or branched chain aliphatic acyl group having a carbon number of from 1 to 6, and it may, for example, be a formyl group, an acetyl group, a propionyl group, an isopropionyl group, a butyryl group or a pivaloyl group.

The C₁-C₁₀ acyloxy group represents an (acyl)-O-group wherein the acyl moiety has the above meaning, and it may, for example, be an acetoxy group, a propionyloxy group, an isopropionyloxy group or a pivaloyloxy group.

The C₁-C₄ haloalkylcarbonyl group, the C₁-C₄ haloalkylthio group and the C₁-C₄ haloalkylsulfonyl group represent a (haloalkyl)-CO-group, a (haloalkyl)-S-group and a (haloalkyl)-SO₂-group, wherein the haloalkyl moiety has the above meaning, and they may, for example, be a chloroacetyl group, a trifluoroacetyl group, a pentafluoropropionyl group, a difluoromethylthio group, a trifluoromethylthio group, a chloromethylsulfonyl group, a difluoromethylsulfonyl group, or a trifluoromethylsulfonyl group.

The C₁-C₄ haloalkylcarbonyloxy group and the C₁-C₄ haloalkylsulfonyloxy group represent a (haloalkylcarbonyl)-O-group and a (haloalkylsulfonyl)-O-group, wherein the haloalkylcarbonyl moiety an the haloalkylsulfonyl moiety have the above meanings, and they may, for example, be a chloroacetyloxy group, a trifluoroacetyloxy group, a chloromethylsulfonyloxy group, or a trifluoromethylsulfonyloxy group,

In the phenyl group (which may be substituted), the aromatic heterocyclic group (which may be substituted), the phenoxy group (which may be substituted), the aromatic heterocyclic oxy group (which may be substituted), the phenylthio group (which may be substituted), the aromatic heterocyclic thio group (which may be substituted), the phenylsulfonyl group (which may be substituted), the phenylsulfonyloxy group (which may be substituted), the aromatic heterocyclic sulfonyl group (which may be substituted), the benzylcarbonyl group (which may be substituted), the benzylcarbonyloxy group (which may be substituted), the benzylsulfonyl group (which may be substituted), the benzoyl group (which may be substituted), the benzoyloxy group (which may be substituted), the benzyloxycarbonyl group (which may be substituted) or the phenoxycarbonyl group (which may be substituted), the “group which may be substituted” means that such a group may be substituted by e.g. a halogen atom, a C₁-C₁₀ alkyl group, a C₁-C₄ haloalkyl group, a C₁-C₁₀ alkoxyalkyl group, a C₁-C₁₀ alkoxy group, a C₁-C₁₀ alkylthio group, a C₁-C₁₀ alkylsulfonyl group, a C₁-C₆ acyl group, a C₁-C₁₀ alkoxycarbonyl group, a cyano group, a carbamoyl group (the nitrogen atom in the group may be independently substituted by a C₁-C₁₀ alkyl group), a nitro group or an amino group (the nitrogen atom in the group may be independently substituted by a C₁-C₁₀ alkyl group, a C₁-C₆ acyl group, a C₁-C₄ haloalkylcarbonyl group, a C₁-C₁₀ alkylsulfonyl group or a C₁-C₄ haloalkylsulfonyl group).

The 5- or 6-membered aromatic heterocyclic group having an optional hetero atom selected from the group consisting of a nitrogen atom, an oxygen atom and a sulfur atom, may, for example, be a furyl group, a thienyl group, a pyrrolyl group, a pyrazolyl group, an isoxazolyl group, an isothiazolyl group, an oxazolyl group, a thiazolyl group, an imidazolyl group, a pyridyl group, a pyridazinyl group, a pyrimidinyl group, a pyrazinyl group, a triazinyl group, a triazolyl group, an oxadiazolyl group or a thiadiazolyl group, having from 1 to 3 hetero atoms.

The aromatic condensed heterocyclic group represents a group having from 1 to 3 hetero atoms optionally selected from a nitrogen atom, an oxygen atom and a sulfur atom, and it may, for example, be a benzofuryl group, a benzothienyl group, an indolyl group, a benzoxazolyl group, a benzothiazolyl group, a benzoimidazolyl group, a benzoisoxazolyl group, a benzoisothiazolyl group, an indazolyl group, a quinolyl group, an isoquinolyl group, a phthaladinyl group, a quinoxalinyl group, a quinazolinyl group, a cinnolinyl group or a benzotriazolyl group.

The aromatic hetero ring in the aromatic heterocyclic group (which may be substituted), the aromatic heterocyclic oxy group (which may be substituted), the aromatic heterocyclic thio group (which may be substituted), or the aromatic heterocyclic sulfonyl group (which may be substituted), represents a 5- or 6-membered group having from 1 to 3 hetero atoms optionally selected from a nitrogen atom, an oxygen atom and a sulfur atom, and it may, for example, be a furyl group, a thienyl group, a pyrrolyl group, a pyrazolyl group, an isoxazolyl group, an isothiazolyl group, an oxazolyl group, a thiazolyl group, an imidazolyl group, a pyridyl group, a pyridazinyl group, a pyrimidinyl group, a pyrazinyl group, a triazinyl group, a triazolyl group, an oxadiazolyl group or a thiadiazolyl group.

Of a compound of the formula [I] having e.g. a hydroxyl group, a carboxyl group or an amino group in its structure, a pharmacologically acceptable salt is a salt of such a group with a metal or an organic base or a salt with a mineral acid or an organic salt. The metal may be an alkali metal such as sodium or potassium, or an alkaline earth metal such as magnesium or calcium, and the organic base may, for example, be triethylamine or diisopropylamine. The mineral acid may, for example, be hydrochloric acid or sulfuric acid, and the organic acid may, for example, be acetic acid, methanesulfonic acid or p-toluenenesulfonic acid.

Now, typical examples of the compound of the formula [I] useful for Component A will be shown in Tables 1 to 14, but the compound is not limited to such examples and may, for example, include compounds exemplified in the above-mentioned Patent Document 1.

The following symbols in the Tables in this specification represent the respective corresponding groups as shown below.

Me: Methyl group Et: Ethyl group Pr: n-Propyl group Pr-i: Isopropyl group Pr-c: Cyclopropyl group Bu: n-Butyl group Bu-i: iso-Butyl group Bu-s: sec-Butyl group Bu-t: tert-Butyl group Bu-c: Cyclobutyl group Pen: n-Pentyl group Pen-c: Cyclopentyl group Hex: n-Hexyl group Hex-c: Cyclohexyl group Ph: Phenyl group

Further, for example, (4-Cl)Ph represents a 4-chlorophenyl group, and 3-Hex represents a 3-hexyl group.

Further, in a case where a compound of the present invention contains a hydroxyl group as a substituent, it may have keto-enol tautomers, and the respective tautomers and their mixtures are also included in the compound of the present invention.

TABLE 1

m.p. (° C.) or refractive Compound index No. R¹ R² R³ R⁴ n R⁵ R⁶ Z₁ R²² R²³ R²⁴ (n_(D) ²⁰) 1-0001 Me Me H H 2 H H S Me H H 66-68 1-0002 Me Me H H 2 H H S Cl Me H 87-88 1-0003 Me Me H H 2 H H S H H Me 95-97 1-0004 Me Me H H 2 H H S Cl H H 70-72 1-0005 Me Me H H 2 H H S H H Cl 118-119 1-0006 Me Me H H 2 H H O H H H Not- measur- able 1-0007 Me Me H H 2 H H O H H C(═O)OMe 124-125

TABLE 2

m.p. (° C.) or Compound refractive No. R¹ R² R³ R⁴ n R⁵ R⁶ Z² R²⁵ R²⁶ R²⁷ index (n_(D) ²⁰) 2-0001 Me Me H H 2 H H S Me C(═NOMe)Me Me 95-96 2-0002 Me Me H H 0 H H S Me C(═NOMe)Me Me 2-0003 Me Me H H 2 H H S H H H  99-101 2-0004 Me Me H H 2 H H S H OMe H 96-97 2-0005 Me Me H H 2 H H S Cl H Cl 125-127 2-0006 Me Me H H 2 H H S Cl Cl Cl 158-160 2-0007 Me Me H H 2 H H S Me Me Me 117-117 2-0008 Me Me H H 2 H H S Me C(═O)Me Me 146-148 2-0009 Me Me H H 2 H H S Ph C(═O)Me Me 1.5730 2-0010 Me Me H H 2 H H S Ph C(═NOMe)Me Me 129-131 2-0011 Me Me H H 2 H H S Cl C(═O)OMe Cl 157-158 2-0012 Me Me H H 2 H H S Cl C(═O)NHMe Cl 178-180 2-0013 Me Me H H 2 H H O H H H 58-61 2-0014 Me Me H H 2 H H O Me H Cl 180-181

TABLE 3

m.p. (° C.) or refractive Compound index No. R¹ R² R³ R⁴ n R⁵ R⁶ R²⁹ R²⁸ R³⁰ (n_(D) ²⁰) 3-0001 Me Me H H 0 H H CF₃ Ph Cl 89-90 3-0002 Me Me H H 2 H H CF₃ Ph Cl 132-133 3-0003 Me Me H H 1 H H Ph Me Cl Not- measur- able 3-0004 Me Me H H 2 H H CF₃ Ph SO₂Et 158-160 3-0005 Me Me H H 2 H H CF₃ Ph N(Me)₂ 150-151 3-0006 Me Me H H 0 H H CF₃ Bu-t Cl 79-81 3-0007 Me Me H H 0 H H CF₃ H Cl 120-122 3-0008 Me Me H H 0 H H CF₃ CHF₂ Cl 41-42 3-0009 Me Me H H 0 H H Cl CHF₂ CF₃ 89-90 3-0010 Me Me H H 2 H H CF₃ CHF₂ Cl 126-127 3-0011 Me Me H H 2 H H Cl CHF₂ CF₃ 136-137 3-0012 Me Me H H 2 H H OEt Me CF₃ 124-125 3-0013 Me Me H H 2 H H CF₃ Me OMe 113-114 3-0014 Me Me H H 2 H H CF₃ Me O(2-Cl)Ph 67-70 3-0015 Me Me H H 2 H H CF₃ Me OPen-c 113-114 3-0016 Me Me H H 2 H H CF₃ Me CN 105-108 3-0017 Me Me H H 2 H H Cl Et Cl 105-107 3-0018 Me Me H H 2 H H CHF₂ Me Cl 78-79 3-0019 Me Me H H 2 H H CF₃ —(CH₂)₃O— 151-152 3-0020 Me Me H H 0 H H CHF₂ Me Cl 1.5183 3-0021 Me Me H H 0 H H CF₃ Ph F 3-0022 Me Me H H 0 H H CF₃ Ph SEt 3-0023 Me Me H H 0 H H CF₃ Ph N(Me)2 3-0024 Me Me H H 0 H H OMe Me CF₃ 3-0025 Me Me H H 0 H H OH Me CF₃ 3-0026 Me Me H H 0 H H OEt Me CF₃ 3-0027 Me Me H H 0 H H CF₃ Me F 3-0028 Me Me H H 0 H H CF₃ Me OMe 3-0029 Me Me H H 0 H H CF₃ Me O(2-Cl)Ph 3-0030 Me Me H H 0 H H CF₃ Me OPen-c 3-0031 Me Me H H 0 H H CF₃ Me CN 3-0032 Me Me H H 0 H H Cl Et Cl 3-0033 Me Me H H 0 H H CF₃ —(CH₂)₃O— 3-0034 Me Me H H 2 H H CF₃ H Cl 138-140

TABLE 4 m.p. (° C.) or refractive Compound index No. R¹ R² R³ R⁴ n R⁵ R⁶ R²⁹ R²⁸ R³⁰ (n_(D) ²⁰) 3-0035 Me Me H H 2 H H H Me Cl 105-106 3-0036 Me Me H H 2 H H Me Me Me 148-150 3-0037 Me Me H H 2 H H Me Me Cl  99-101 3-0038 Me Me H H 2 H H Cl Me Cl 143-145 3-0039 Me Me H H 2 H H CF₃ Me Cl 115-116 3-0040 Me Me H H 2 H H Cl Me CF₃ 120-122 3-0041 Me Me H H 2 H H CF₃ Me F 79-82 3-0042 Me Me H H 2 H H CF₃ Me OH 90-92 3-0043 Me Me H H 2 H H OMe Me CF₃ 125-126 3-0044 Me Me H H 2 H H CF₃ Me OEt 92-94 3-0045 Me Me H H 2 H H CF₃ Me OPr-i 69-71 3-0046 Me Me H H 2 H H CF₃ Me OPr 82-83 3-0047 Me Me H H 2 H H CF₃ Me OBu-t 86-89 3-0048 Me Me H H 2 H H CF₃ Me OBu 61-62 3-0049 Me Me H H 2 H H CF₃ Me OHex-c 124-125 3-0050 Me Me H H 2 H H CF₃ Me OCH₂Pr-c 93-94 3-0051 Me Me H H 2 H H CF₃ Me OCH₂Pen-c 112-113 3-0052 Me Me H H 2 H H CF₃ Me OCH₂Hex-c 56-59 3-0053 Me Me H H 2 H H CF₃ Me OCH₂C≡CH 92-93 3-0054 Me Me H H 2 H H CF₃ Me OCHF₂ 129-130 3-0055 Me Me H H 2 H H OCHF₂ Me CF₃ Not- measurable 3-0056 Me Me H H 2 H H CF₃ Me OCH₂CHF₂ 89-91 3-0057 Me Me H H 2 H H CF₃ Me OCH₂CF₃ 93-95 3-0058 Me Me H H 2 H H CF₃ Me OCH₂CN 1.4872 3-0059 Me Me H H 2 H H CF₃ Me OCH₂Ph 79-81 3-0060 Me Me H H 2 H H CF₃ Me OPh 122-123 3-0061 Me Me H H 2 H H CF₃ Me O(3-Cl)Ph Not- measurable 3-0062 Me Me H H 2 H H CF₃ Me O(3-OMe)Ph 1.5059 3-0063 Me Me H H 2 H H CF₃ Me O(4-Cl)Ph 68-69 3-0064 Me Me H H 2 H H CF₃ Me O(4-Me)Ph 132-133 3-0065 Me Me H H 2 H H CF₃ Me O(4-OMe)Ph 115-117 3-0066 Me Me H H 2 H H CF₃ Me OC(═O)Me 130-131 3-0067 Me Me H H 2 H H CF₃ Me SO₂Me 168-169 3-0068 Me Me H H 2 H H CF₃ Me SEt 100-102 3-0069 Me Me H H 2 H H CF₃ Me SO₂Et 107-108 3-0070 Me Me H H 2 H H CF₃ Me SO₂Ph 166-168 3-0071 Me Me H H 2 H H CF₃ Me Me 105-107 3-0072 Me Me H H 2 H H Ph Me Cl 127-129

TABLE 5 m.p. (° C.) or refractive Compound index No. R¹ R² R³ R⁴ n R⁵ R⁶ R²⁹ R²⁸ R³⁰ (n_(D) ²⁰) 3-0073 Me Me H H 2 H H CF₃ Et Cl 111-112 3-0074 Me Me H H 2 H H Cl Et CF₃ 112-114 3-0075 Me Me H H 2 H H CF₃ Pr-i Cl 157-158 3-0076 Me Me H H 2 H H Cl Pr-i CF₃ 135-136 3-0077 Me Me H H 2 H H CF₃ Pr Cl 89-90 3-0078 Me Me H H 2 H H Cl Pr CF₃ 111-113 3-0079 Me Me H H 2 H H CF₃ Bu-t H 101-103 3-0080 Me Me H H 2 H H CF₃ Bu-t Cl 118-119 3-0081 Me Me H H 2 H H CF₃ Bu-s Cl 110-112 3-0082 Me Me H H 2 H H Cl Bu-s CF₃ 110-111 3-0083 Me Me H H 2 H H CF₃ Bu-i Cl 96-98 3-0084 Me Me H H 2 H H Cl Bu-i CF₃ 140-141 3-0085 Me Me H H 2 H H CF₃ Bu Cl 89-90 3-0086 Me Me H H 2 H H Cl Bu CF₃ 108-110 3-0087 Me Me H H 2 H H CF₃ CH₂Ph Cl 132-133 3-0088 Me Me H H 2 H H Cl CH₂Ph CF₃ 118-120 3-0089 Me Me H H 2 H H CF₃ Pen-c Cl 130-131 3-0090 Me Me H H 2 H H Cl Pen-c CF₃ 147-148 3-0091 Me Me H H 2 H H CF₃ Hex-c Cl 151-152 3-0092 Me Me H H 2 H H CF₃ CH₂Pr-c Cl 93-95 3-0093 Me Me H H 2 H H Cl CH₂Pr-c CF₃ 129-130 3-0094 Me Me H H 2 H H CF₃ 1-cyclopropylethyl Cl 87-89 3-0095 Me Me H H 2 H H Cl 1-cyclopropylethyl CF₃ 121-123 3-0096 Me Me H H 2 H H CF₃ CH₂(2-Methylcyclopropyl) Cl 102-103 3-0097 Me Me H H 2 H H Cl CH₂(2-Methylcyclopropyl) CF₃ 118-119 3-0098 Me Me H H 2 H H CF₃ CH₂Bu-c Cl 94-96 3-0099 Me Me H H 2 H H Cl CH₂Bu-c CF₃ 141-142 3-0100 Me Me H H 2 H H CF₃ CH₂Pen-c Cl 127-129 3-0101 Me Me H H 2 H H Cl CH₂Pen-c CF₃ 146-149 3-0102 Me Me H H 2 H H CF₃ CH₂Hex-c Cl 152-154 3-0103 Me Me H H 2 H H Cl CH₂Hex-c CF₃ 115-117 3-0104 Me Me H H 2 H H CF₃ CH₂CH═CH₂ Cl 78-80 3-0105 Me Me H H 2 H H Cl CH₂CH═CH₂ CF₃ 105-106 3-0106 Me Me H H 2 H H CF₃ CH₂C≡CH Cl 73-74 3-0107 Me Me H H 2 H H Cl CH₂C≡CH CF₃ 108-109 3-0108 Me Me H H 2 H H CF₃ CHMeC≡CH Cl 95-96 3-0109 Me Me H H 2 H H Cl CHMeC═CH CF₃ 116-118 3-0110 Me Me H H 2 H H CF₃ CH₂C≡CMe Cl 114-115

TABLE 6 m.p. (° C.) or Compound refractive No. R¹ R² R³ R⁴ n R⁵ R⁶ R²⁹ R²⁸ R³⁰ index (n_(D) ²⁰) 3-0111 Me Me H H 2 H H Cl CH₂C≡CMe CF₃ 115-116 3-0112 Me Me H H 2 H H CF₃ CHF₂ OMe 72-74 3-0113 Me Me H H 2 H H OMe CHF₂ CF₃ 108-109 3-0114 Me Me H H 2 H H CF₃ CH₂CHF₂ Cl  99-100 3-0115 Me Me H H 2 H H Cl CH₂CHF₂ CF₃ 107-109 3-0116 Me Me H H 2 H H CF₃ CH₂CF₃ Cl 135-136 3-0117 Me Me H H 2 H H Cl CH₂CF₃ CF₃ 112-115 3-0118 Me Me H H 2 H H CF₃ CH₂OMe Cl 87-89 3-0119 Me Me H H 2 H H Cl CH₂OMe CF₃ 125-128 3-0120 Me Me H H 2 H H CF₃ CH₂OEt Cl 97-98 3-0121 Me Me H H 2 H H Cl CH₂OEt CF₃ 128-129 3-0122 Me Me H H 2 H H CF₃ CH₂CH₂OH Cl 79-81 3-0123 Me Me H H 2 H H Cl CH₂CH₂OH CF₃ 93-94 3-0124 Me Me H H 2 H H CF₃ CH₂CH₂OMe Cl 102-104 3-0125 Me Me H H 2 H H Cl CH₂CH₂OMe CF₃ 118-119 3-0126 Me Me H H 2 H H CF₃ CH₂CH₂OEt Cl 56-59 3-0127 Me Me H H 2 H H Cl CH₂CH₂OEt CF₃ 118-119 3-0128 Me Me H H 2 H H CF₃ CH₂SMe Cl 103-105 3-0129 Me Me H H 2 H H Cl CH₂SMe CF₃ 128-129 3-0130 Me Me H H 2 H H CF₃ CH₂SO₂Me Cl 157-159 3-0131 Me Me H H 2 H H Cl CH₂SO₂Me CF₃ 165-166 3-0132 Me Me H H 2 H H CF₃ CH₂CH₂SO₂Me Cl 155-157 3-0133 Me Me H H 2 H H Cl CH₂CH₂SO₂Me CF₃ 166-168 3-0134 Me Me H H 2 H H CF₃ CH₂CN Cl 128-129 3-0135 Me Me H H 2 H H Cl CH₂CN CF₃ 117-118 3-0136 Me Me H H 2 H H CF₃ CH₂C(═O)OEt Cl 127-129 3-0137 Me Me H H 2 H H Cl CH₂C(═O)OEt CF₃ 143-145 3-0138 Me Me H H 2 H H CF₃ CH₂C(═O)NH₂ Cl 173-174 3-0139 Me Me H H 2 H H Cl CH₂C(═O)NH₂ CF₃ 182-183 3-0140 Me Me H H 2 H H CF₃ CH₂C(═O)N(Me)₂ Cl 142-143 3-0141 Me Me H H 2 H H Cl CH₂C(═O)N(Me)₂ CF₃ 181-182 3-0142 Me Me H H 2 H H CF₃ CH₂C(═O)Me Cl 148-149 3-0143 Me Me H H 2 H H Cl CH₂C(═O)Me CF₃ 163-164 3-0144 Me Me H H 2 H H CF₃ CH₂CH₂C(═O)Me Cl 89-91 3-0145 Me Me H H 2 H H Me Ph Me 140-141 3-0146 Me Me H H 2 H H Me Ph Cl 124-125 3-0147 Me Me H H 2 H H Et Ph Cl 112-113 3-0148 Me Me H H 2 H H Pr Ph Cl 122-123

TABLE 7 m.p. (° C.) or refractive Compound index No. R¹ R² R³ R⁴ n R⁵ R⁶ R²⁹ R²⁸ R³⁰ (n_(D) ²⁰) 3-0149 Me Me H H 2 H H Pr-i Ph Cl 116-117 3-0150 Me Me H H 2 H H Bu-t Ph Cl 100-102 3-0151 Me Me H H 2 H H CF₃ Ph H 111-112 3-0152 Me Me H H 2 H H CF₃ Ph Me 129-132 3-0153 Me Me H H 2 H H CF₃ Ph CF₃ 112-113 3-0154 Me Me H H 2 H H CF₃ Ph F 90-91 3-0155 Me Me H H 2 H H CF₃ Ph OMe 104-106 3-0156 Me Me H H 2 H H CF₃ Ph OEt 129-131 3-0157 Me Me H H 2 H H CF₃ Ph OPr-i 86-88 3-0158 Me Me H H 2 H H CF₃ Ph OPr 117-118 3-0159 Me Me H H 2 H H CF₃ Ph OBu-t 105-108 3-0160 Me Me H H 2 H H CF₃ Ph OCHF₂ 90-92 3-0161 Me Me H H 2 H H CF₃ Ph SO₂Me 167-168 3-0162 Me Me H H 2 H H CF₃ Ph CN 113-115 3-0163 Me Me H H 2 H H CF₃ (2-Cl)Ph Cl 153-154 3-0164 Me Me H H 2 H H CF₃ (3-Cl)Ph Cl 106-107 3-0165 Me Me H H 2 H H CF₃ (4-Cl)Ph Cl 142-143 3-0166 Me Me H H 2 H H CF₃ (4-F)Ph Cl 135-138 3-0167 Me Me H H 2 H H CF₃ (4-OMe)Ph Cl 136-138 3-0168 Me Me H H 2 H H CF₃ (4-Me)Ph Cl 129-130 3-0169 Me Me H H 2 H H CF₃ (4-NO₂)Ph Cl 145-147 3-0170 Me Me H H 2 H H CF₃ (4-CN)Ph Cl 91-93 3-0171 Me Me H H 2 H H CF₃ (4-C(═O)Me)Ph Cl 133-135 3-0172 Me Me H H 2 H H CF₃ (4-C(═O)OMe)Ph Cl 121-124 3-0173 Me Me H H 2 H H CF₃ Pyrmidin-2-yl Cl 148-150 3-0174 Me Me H H 2 H H CF₃ 4,6- Cl 117-118 Dimethoxypyrmidin- 2-yl 3-0175 Me Me H H 2 H H CF₃ SO₂Me Cl 146-148 3-0176 Me Me H H 2 H H CF₃ SO₂Ph Cl 145-148 3-0177 Me Me H H 2 H H CF₃ C(═O)Me Cl 130-131 3-0178 Me Me H H 2 H H CF₃ C(═O)Ph Cl 114-117 3-0179 Me Me H H 2 H H CF₃ C(═O)OMe Cl 104-106 3-0180 Me Et H H 2 H H CF₃ Me Cl 108-110 3-0181 Me Me H H 0 H H CHF₂ Me Cl 1.5183 3-0182 Me Me H H 0 H H Ph Me Cl 76-77 3-0183 Me Me H H 0 H H CF₃ Bu-t OMe 1.4831 3-0184 Me Me H H 0 H H CF₃ CH₂C(═O)NH₂ Cl 179-180 3-0185 Me Me H H 0 H H Me Ph Cl 58-60 3-0186 Me Me H H 0 H H CF₃ Me Cl 3-0187 Me Me H H 0 H H CF₃ Me OCHF₂ 3-0188 Me Me H H 2 H H CF₃ Me OCHF₂ 129-130 3-0189 Me Me H H 0 H H CF₃ Et OCHF₂ 3-0190 Me Me H H 2 H H CF₃ Et OCHF₂  98-100

TABLE 8

m.p. (° C.) or Com- refractive pound index No. R¹ R² R³ R⁴ n R⁵ R⁶ Z³ R³¹ R³² (n_(D) ²⁰) 4-0001 Me Me H H 2 H H O CF₃ Me 135-136 4-0002 Me Me H H 2 H H S Me Cl 113-114 4-0003 Me Me H H 0 H H O CF₃ Me 4-0004 Me Me H H 0 H H S Me Cl 4-0005 Me Me H H 2 H H O Me Me 178-179 4-0006 Me Me H H 2 H H O CF₃ OEt 89-91 4-0007 Me Me H H 2 H H O Ph Me 81-83 4-0008 Me Me H H 2 H H S Me OEt 109-111

TABLE 9

m.p. (° C.) or refrac- Compound tive index No. R¹ R² R³ R⁴ n R⁵ R⁶ Z⁴ R³³ R³⁴ (n_(D) ²⁰) 5-0001 Me Me H H 2 H H NMe Cl Me 114-115 5-0002 Me Me H H 2 H H NMe Cl Et 107-108 5-0003 Me Me H H 2 H H NMe CF₃ H 142-143 5-0004 Me Me H H 2 H H NCHF₂ —(CH₂)₄— 123-125 5-0005 Me Me H H 2 H H NPh OEt Me 1.5397 5-0006 Me Me H H 2 H H NPh OCHF₂ Me 1.5339 5-0007 Me Me H H 2 H H NPh CF₃ H  99-101 5-0008 Me Me H H 2 H H NPh OCH₂CH═CH₂ Me 87-90 5-0009 Me Me H H 1 H H NPh OCH₂CH═CH₂ Me 1.5702

TABLE 10

m.p. (° C.) or Compound refractive No. R¹ R² R³ R⁴ n R⁵ R⁶ Z⁵ R³⁵ R³⁶ index (n_(D) ²⁰) 6-0001 Me Me H H 2 H H NCHF₂ —(CH₂)₄— Not- measur- able 6-0002 Me Me H H 2 H H NPh H OEt 107-108 6-0003 Me Me H H 2 H H NPh H OCHF₂ 1.5383 6-0004 Me Me H H 2 H H O Me H 100-102 6-0005 Me Me H H 0 H H NCHF₂ —(CH₂)₄— 1.5264

TABLE 11

m.p. (° C.) or refrac- tive Compound index No. R¹ R² R³ R⁴ n R⁵ R⁶ R³⁷ R³⁸ R³⁹ R⁴⁰ (n_(D) ²⁰) 7-0001 Me Me H H 2 H H H CF₃ H H — 77-80 7-0002 Me Me H H 2 H H H CF₃ H H N-oxide 114-116 7-0003 Me Me H H 0 H H H CF₃ H H — 7-0004 Me Me H H 2 H H H H H H — 130-131 7-0005 Me Me H H 2 H H H H H H N-oxide 166-168 7-0006 Me Me H H 2 H H Cl Ph H H — 118-120 7-0007 Me Me H H 2 H H OMe Ph H H — 105-106 7-0008 Me Me H H 2 H H Cl Me H H — 115-116 7-0009 Me Me H H 2 H H OMe Me H H — 134-135 7-0010 Me Me H H 2 H H Me Me H H N-oxide 198-199 7-0011 Me Me H H 2 H H Ph Ph H H — 161-162 7-0012 Me Me H H 1 H H H H H H — 97-99 7-0013 Me Me H H 0 H H 2-Chloropyridin- H H H — 154-155 3- yl)methylthio

TABLE 12

m.p. (° C.) pr refractive Compound index No. R¹ R² R³ R⁴ n R⁵ R⁶ R⁴¹ R⁴² R⁴³ (n_(D) ²⁰) 8-0001 Me Me H H 2 H H H OMe CF₃ 175-176 8-0002 Me Me H H 0 H H H OMe CF₃ 8-0003 Me Me H H 2 H H H Cl Cl 119-120 8-0004 Me Me H H 2 H H H OEt CF₃ 94-95 8-0005 Me Me H H 2 H H H OMe OMe 186-187 8-0006 Me Me H H 2 H H Me OMe CF₃ 143-144 8-0007 Me Me H H 2 H H OMe OMe CF₃ 144-145 8-0008 Me Me H H 2 H H SMe OMe CF₃ 160-162 8-0009 Me Me H H 2 H H SO₂Me OMe CF₃ 144-146 8-0010 Me Me H H 2 H H NH₂ OMe CF₃ 208-209 8-0011 Me Me H H 2 Pr-i H H H CF₃ 112-113 8-0012 Me Me H H 0 Pr-i H H H CF₃ 1.4986

TABLE 13

m.p. (° C.) or Compound refractive No. R¹ R² R³ R⁴ n R⁵ R⁶ Y¹ index (n_(D) ²⁰) 9-0001 Me Me H H 2 H H Pyridin-2-yl 116-118 9-0002 Me Me H H 2 H H Pyridin-2-yl 1-oxide 140-143 9-0003 Me Me H H 2 H H Pyridin-4-yl 133-136 9-0004 Me Me H H 2 H H Pyridin-4-yl 1-oxide 110-113 9-0005 Me Me H H 2 H H 1,2,4-Oxadiazol-3-yl Not- measurable 9-0006 Me Me H H 2 H H 3-Phenyl-1,2,4- 153-154 oxadiazol-5-yl 9-0007 Me Me H H 2 H H 3-Benzyl-1,2,4- 108-109 oxadiazol-5-yl 9-0008 Me Me H H 2 H H 2-Chlorothiazol-4-yl 110-112 9-0009 Me Me H H 2 H H 1,4-Dimethylimidazol- 163-164 5-yl 9-0010 Me Me H H 1 H H Pyridin-2-yl 81-82 9-0011 Me Me H H 1 H H Pyridin-4-yl 94-96 9-0012 Me Me H H 1 H H 1,4-Dimethylimidazol- 138-140 5-yl 9-0013 Me Me H H 0 H H 1,4-Dimethylimidazol- 1.5427 5-yl

TABLE 14

m.p. (° C.) or Compound refractive index No. R¹ R² R³ R⁴ n R⁵ R⁶ Y¹ (n_(D) ²⁰) 10-0001 Me Me H H 2 H H Benzimidazol-2-yl 171-174 10-0002 Me Me H H 2 H H Benzothiophen-2-yl 181-183 10-0003 Me Me H H 2 H H 3-Chlorobenzothiophen- 109-112 2-yl 10-0004 Me Me H H 2 H H Benzotriazol-1-yl 206-207 10-0005 Me Me H H 2 H H 1-Methylindazol-4-yl 128-130 10-0006 Me Me H H 2 H H Benzothiazol-2-yl 142-143 10-0007 Me Me H H 2 H H Benzothiophen-3-yl 188-191 10-0008 Me Me H H 2 H H 5-Chlorobenzothiophen- 129-130 3-yl 10-0009 Me Me H H 2 H H Benzoxazol-2-yl 127-129 10-0010 Me Me H H 2 H H 3-Methylbenzothiophen- 161-163 2-yl 10-0011 Me Me H H 2 H H 3-Bromobenzothiophen- 118-119 2-yl 10-0012 Me Me H H 2 H H Benzofuran-2-yl 123-124 10-0013 Me Me H H 2 H H 2-Methylbenzofuran-7- 135-137 yl 10-0014 Me Me H H 2 H H 3-Bromobenzofuran-2-yl 107-108 10-0015 Me Me H H 2 H H Benzothiophen-7-yl 95-97 10-0016 Me Me H H 2 H H 1-Methylindazol-7-yl 89-90 10-0017 Me Me H H 2 H H 3-Methylbenzofuran-2- 111-112 yl 10-0018 Me Me H H 2 H H 3-Chloro-1- 162-165 methylindol-2-yl

In the formula [I] for Component A, preferred is an isoxazoline derivative or its salt, wherein each of R¹ and R² which are independent of each other, is a methyl group or an ethyl group;

each of R³, R⁴, R⁵ and R⁶ is a hydrogen atom; n is an integer of 2;

Y is a thiophen-3-yl group (this group is necessarily substituted at the 2- and 4-positions by a halogen atom, an alkyl group, a haloalkyl group, an alkoxyalkyl group, a cycloalkyl group, an alkoxy group, a haloalkoxy group, an acyl group, a haloalkylcarbonyl group, an alkoxycarbonyl group, a cyano group or a carbamoyl group (the nitrogen atom of this group may independently be substituted by an alkyl group)),

a pyrazol-4-yl group (this group is necessarily substituted at the 3- and 5-positions by a halogen atom, an alkyl group, a haloalkyl group, an alkoxyalkyl group, a cycloalkyl group, an alkoxy group, a haloalkoxy group, a cycloalkylalkyloxy group, a phenoxy group which may be substituted, an alkylthio group, an alkylsulfonyl group, an acyl group, a haloalkylcarbonyl group, an alkoxycarbonyl group, a cyano group or a carbamoyl group (the nitrogen atom of this group may independently be substituted by an alkyl group) and further at the 1-position by a hydrogen atom, an alkyl group, an alkyl group mono-substituted by an optional group selected from the substituent group β, a haloalkyl group, a cycloalkyl group, an alkenyl group, an alkynyl group, an alkylsulfonyl group, an alkylsulfonyl group mono-substituted by an optional group selected from the substituent group γ, a haloalkylsulfonyl group, a phenyl group which may be substituted, an aromatic heterocyclic group which may be substituted, a phenylsulfonyl group which may be substituted, an aromatic heterocyclic sulfonyl group which may be substituted, an acyl group, a haloalkylcarbonyl group, a benzylcarbonyl group which may be substituted, a benzoyl group which may be substituted, an alkoxycarbonyl group, a benzyloxycarbonyl group which may be substituted, a phenoxycarbonyl group which may be substituted, or a carbamoyl group (the nitrogen atom of this group may independently be substituted by an alkyl group or a phenyl group which may be substituted)),

a pyrazol-5-yl group (this group is necessarily substituted at the 4-position by a halogen atom, an alkyl group, a haloalkyl group, an alkoxyalkyl group, a haloalkoxy group, an acyl group, a haloalkylcarbonyl group, an alkoxycarbonyl group, a cyano group or a carbamoyl group (the nitrogen atom of this group may independently be substituted by an alkyl group) and further at the 1-position by a hydrogen atom, an alkyl group, an alkyl group mono-substituted by an optional group selected from the substituent group β, a haloalkyl group, a cycloalkyl group, or a phenyl group which may be substituted),

an isoxazol-4-yl group (this group is necessarily substituted at the 3- and 5-positions, by a halogen atom, an alkyl group, a haloalkyl group, an alkoxyalkyl group, a cycloalkyl group, an alkoxy group, a haloalkoxy group, an alkylthio group, an alkylsulfonyl group, an acyl group, a haloalkylcarbonyl group, an alkoxycarbonyl group, a cyano group, or a carbamoyl group (the nitrogen atom of this group may independently be substituted by an alkyl group)),

an isothiazol-4-yl group (this group is necessarily substituted at the 3- and 5-positions by a halogen atom, an alkyl group, a haloalkyl group, an alkoxyalkyl group, a cycloalkyl group, an alkoxy group, a haloalkoxy group, a phenoxy group which may be substituted, an alkylthio group, an alkylsulfonyl group, an acyl group, a haloalkylcarbonyl group, an alkoxycarbonyl group, a cyano group, or a carbamoyl group (the nitrogen atom of this group may independently be substituted by an alkyl group)),

a pyridin-3-yl group (this group is necessarily substituted at the 2- and 4-positions, by a halogen atom, an alkyl group, a haloalkyl group, an alkoxyalkyl group, a cycloalkyl group, an alkoxy group, a haloalkoxy group, an alkylthio group, an alkylsulfonyl group, an acyl group, a haloalkylcarbonyl group, an alkoxycarbonyl group, a cyano group, or a carbamoyl group (the nitrogen atom of this group may independently be substituted by an alkyl group)), or

a pyrimidin-5-yl group (this group is necessarily substituted at the 4- and 6-positions by a halogen atom, an alkyl group, a haloalkyl group, an alkoxyalkyl group, a cycloalkyl group, an alkoxy group, a haloalkoxy group, an alkylthio group, an alkylsulfonyl group, an acyl group, a haloalkylcarbonyl group, an alkoxycarbonyl group, a cyano group, or a carbamoyl group (the nitrogen atom of this group may independently be substituted by an alkyl group)).

A herbicidal compound particularly preferred as Component A is Compound No. 3-0054.

The compound represented by the formula [I] can be produced by the method disclosed in Patent Document 1 or methods in accordance therewith.

Whereas herbicidal compounds preferred as Component B are quizalofop-P-ethyl, sethoxydim, pyrithiobac-sodium, bispyribac-sodium, pyrimisulfan, imazethapyr, imazaquin, chlorimuron-ethyl, diuron, bentazone, paraquat, sulfentrazone, fluthiacet-methyl, sulcotrione, norflurazon, clomazone, bilanafos, asulam, flufenacet, dimethenamid-P, sulfentrazone, thiobencarb, 2,4-D and clopyralid, as well as their analogues such as salts, acids, esters and amides.

The herbicidal composition of the present invention is generally as follows, although it depends also on the relative activities of the respective Components.

Per 1 part by weight of Component A, Component B is from 0.001 to 100 parts by weight, preferably from 0.01 to 50 parts by weight, more preferably from 0.05 to 30 parts by weight, and when Component D is incorporated, D is from 0.01 to 100 parts by weight, preferably from 0.05 to 30 parts by weight.

Further, per 1 part by weight of Component A, Component B is from 0.001 to 100 parts by weight, preferably from 0.01 to 50 parts by weight, more preferably from 0.05 to 30 parts by weight, Component C is from 0.001 to 100 parts by weight, preferably from 0.01 to 50 parts by weight, more preferably from 0.05 to 30 parts by weight, and when Component D is incorporated, Component D is from 0.001 to 100 parts by weight, preferably from 0.01 to 100 parts by weight, more preferably from 0.05 to 30 parts by weight.

The herbicidal composition of the present invention may contain additive components which are commonly used for agricultural formulations, as the case requires.

Such additive components may, for example, be a carrier such as a solid carrier or a liquid carrier, a surfactant, a binder or an adhesion-imparting agent, a thickener, a coloring agent, an extender, a spreader, an anti-freezing agent, an anti-caking agent, a disintegrating agent and a stabilizing agent.

Further, an antiseptic, plant segments, etc. may be used as additive components, as the case requires. Such additive components may be used alone or in combination as a mixture of two or more of them.

Such additive components will be described.

The solid carrier may, for example, be a natural mineral such as quartz, clay, kaolinite, pyrophillite, sericite, talc, bentonite, acid clay, attapulgite, zeolite or diatomaceous earth; an inorganic salt such as calcium carbonate, ammonium sulfate, sodium sulfate or potassium chloride; synthetic silicic acid or synthetic silicate; an organic solid carrier such as starch, cellulose or plant powder; or a plastic carrier such as polyethylene, polypropylene or polyvinylidene chloride. They may be used alone or in combination as a mixture of two or more of them.

The liquid carrier may, for example, be an alcohol which may be classified into a monohydric alcohol such as methanol, ethanol, propanol, isopropanol or butanol, and a polyhydric alcohol such as ethylene glycol, diethylene glycol, propylene glycol, hexylene glycol, polyethylene glycol, polypropylene glycol or glycerol; a polyhydric alcohol derivative such as propylene type glycol ether; a ketone such as acetone, methyl ethyl ketone, methyl isobutyl ketone, diisobutyl ketone or cyclohexanone; an ether such as ethyl ether, dioxane, cellosolve, dipropyl ether or tetrahydrofuran, an aliphatic hydrocarbon such as normal paraffin, naphthene, isoparaffin, kerosine or mineral oil; an aromatic hydrocarbon such as benzene, toluene, xylene, solvent naphtha or alkyl naphthalene, a halogenated hydrocarbon such as dichloroethane, chloroform or carbon tetrachloride; an ester such as ethyl acetate, diisopropyl phthalate, dibutyl phthalate, dioctyl phthalate or dimethyl adipate; a lactone such as γ-butyrolactone; an amide such as dimethylformamide, dimethylformamide, dimethylacetamide or N-alkylpyrrolidinone; a nitrile such as acetonitrile; a sulfur compound such as dimethylsulfoxide; a vegetable oil such as soybean oil, rapeseed oil, cotton oil or castor oil; or water. They may be used alone or in combination as a mixture of two or more of them.

The surfactant is not particularly limited, but it is preferably one to be gelled or swelled in water. It may, for example, be a non-ionic surfactant such as a sorbitan fatty acid ester, a polyoxyethylene sorbitan fatty acid eater, a sucrose fatty acid ester, a polyoxyethylene fatty acid ester, a polyoxyethylene resin acid ester, a polyoxyethylene fatty acid diester, a polyoxyethylene alkyl ether, a polyoxyethylene alkyl phenyl ether, a polyoxyethylene dialkyl phenyl ether, a polyoxyethylene alkyl phenyl ether formalin condensate, a polyoxyethylene polyoxypropylene block copolymer, an alkyl polyoxyethylene polypropylene block polymer ether, a polyoxyethylene alkylamine, a polyoxyethylene fatty acid amide, a polyoxyethylene fatty acid bisphenyl ether, a polyalkylene benzyl phenyl ether, a polyoxyalkylene styryl phenyl ether, an acetylenediol, a polyoxyalkylene-added acetylenediol, a polyoxyethylene ether type silicon, an ester type silicon, a fluorinated surfactant, a polyoxyethylene castor oil, a polyoxyethylene hardened castor oil; an anionic surfactant such as an alkyl sulfate, a polyoxyethylene alkyl ether sulfate, a polyoxyethylene alkyl phenyl ether sulfate, a polyoxyethylene styryl phenyl ether sulfate, an alkyl benzenesulfonate, a lignin sulfonate, an alkylsulfosuccinate, a naphthalenesulfonate, an alkylnaphthalenesulfonate, a salt of a formalin condensate or naphthalenesulfonate, a salt of a formalin condensate of an alkylnaphthalenesulfonate, a fatty acid salt, a polycarboxylic acid salt, an N-methyl-fatty acid sarcosinate, a resin acid salt, a polyoxyethylene alkyl ether phosphate or a polyoxyethylene alkyl phenyl ether phosphate; a cationic surfactant such as a laurylamine hydrochloride, a stearylamine hydrochloride, an oleylamine hydrochloride, a stearylamine acetate, a stearylaminopropylamine acetate, an alkyltrimethylammonium chloride, or an alkyldimethylbenzalkonium chloride; or an amphoteric surfactant such as an amino acid type or a betain type. These surfactants may be used alone or in combination as a mixture of two or more of them.

Further, the binder or adhesive-imparting agent may, for example, be carboxymethylcellulose or its salt, dextrin, water-soluble starch, guar gum, sucrose, polyvinylpyrrolidone, gum arabic, polyvinyl alcohol, polyvinyl acetate, polysodium acrylate, a polyethylene glycol having an average molecular weight of 6,000 to 20,000, a polyethylene oxide having an average molecular weight of 100,000 to 5,000,000 or a natural phosphatide (such as cephalinic acid or lecithin).

The thickener may, for example, be a water-soluble polymer such as xanthan gum, guar gum, carboxylmethylcellulose, polyvinylpyrrolidone, carboxyvinyl polymer, acrylic polymer, starch derivative or polysaccharide; or an inorganic fine powder such as high purity bentonite or white carbon.

The coloring agent may, for example, be an inorganic pigment such as iron oxide, titanium oxide or Prussian blue; or an organic dye such as an arizarin dye, an azo dye or a metal phthalocyanine dye.

The extender may, for example, be a silicon type surfactant, a cellulose powder, dextrin, processed starch, a polyaminocarboxylic acid chelate compound, crosslinked polyvinylpyrrolidone, maleic acid and a styrene, a methacrylic acid copolymer, a half ester of a polymer of a polyhydric alcohol with a dicarboxylic anhydride, or a water-soluble salt of a polystyrene sulfonic acid.

The spreader may, for example, be various surfactants such as sodium dialkylsulfosuccinate, a polyoxyethylene alkyl ether, a polyoxyethylene alkyl phenyl ether or a polyoxyethylene fatty acid ester, paraffin, terpene, a polyamide resin, a polyacrylate, a polyoxyethylene, wax, a polyvinyl alkyl ether, an alkylphenol formalin condensate, or a synthetic resin emulsion.

The anti-freezing agent may, for example, be a polyhydric alcohol such as ethylene glycol, diethylene glycol, propylene glycol or glycerol.

The anticaking agent may, for example, be starch, alginic acid, a polysaccharide such as mannose or galactose, polyvinylpyrrolidone, white carbon, ester gum or petroleum resin.

The disintegrating agent may, for example, be sodium tripolyphosphate, sodium hexamethaphosphate, stearic acid metal salt, a cellulose powder, dextrin, a methacrylate copolymer, a polyvinylpyrrolidone, a polyaminocarboxylic acid chelate compound, a styrene sulfonate/isobutylene/maleic anhydride copolymer or a starch/polyacrylonitrile graft copolymer.

The stabilizer may, for example, be a drying agent such as zeolite, quick lime or magnesium oxide; an anti-oxidation agent such as a phenol type, an amine type, a sulfur type or a phosphorus type; or an ultraviolet absorber such as a salicylic acid type or a benzophenone type.

The antiseptic may, for example, be potassium sorbate or 1,2-benzthiazolin-3-one.

The plant segments may, for example, be sawdust, coconut shellflower, corn cob or tobacco stem.

In a case where the above-mentioned additive components are to be incorporated to the herbicidal composition of the present invention, their contents may be selected by weight such that the carrier is usually from 5 to 95%, preferably from 20 to 90%, the surfactant is usually from 0.1 to 30%, preferably from 0.5 to 10%, and other additives are usually from 0.1 to 30%, preferably from 0.5 to 10%.

The herbicidal composition of the present invention is used as formulated into an optional formulation such as a liquid formulation, an emulsifiable concentrate, a wettable powder, a dust, an oil formulation, a granular wettable powder, a flowable, an emulsified suspension agent, a granular formulation, a jumbo formulation or a suspoemulsion. At the time of such formulation, at least one other agricultural chemical such as another herbicide, a herbicidal microorganism (such as Drechslera monoceras, Xanthomonas campestris pv. poae), an insecticide, a fungicide, a plant-growth-controlling agent or a fertilizer may be mixed to obtain a mixed composition.

Fungicidal compounds which may be mixed or used in combination in the present invention, will be shown below.

Azaconazole, acibenzolar-5-methyl, azoxystrobin, amisulbrom, isoprothiolane, ipconazole, iprodione, iprovalicarb, imazalil, iprobenfos, iminoctadine-triacetate, imibenconazole, etridiazole, edifenphos, ethaboxam, epoxiconazole, oxadixyl, oxytetracycline, oxycarboxin, oxpoconazole fumarate, octhilinone, oxolinic acid, ofurace, orysastrobin, kasugamycin, captafol, carpropamid, carbendazime, carboxin, chinomethionat, captan, quintozene, guazatine, kresoxim-methyl, chlozolinate, chloroneb, chlorothalonil, chloroneb, cyazofamid, diethofencarb, diclocymet, dichlofluanid, diclomezine, dithianon, diniconazole, zineb, difenoconazole, difenzoquat, cyflufenamid, diflumetorim, cyproconazole, cyprodinil, simeconazole, dimethomorph, cymoxanil, dimoxystrobin, ziram, silthiofam, streptomycin, spiroxamine, zoxamide, dazomet, thiabendazole, thiram, thiophanate-methyl, thifluzamide, tecnazene, tecloftalam, tetraconazole, tebuconazole, dodine, dodemorph, triadimenol, triadimefon, triazoxide, tricyclazole, triticonazole, tridemorph, triflumizole, trifloxystrobin, triforine, tolylfluanid, tolclofos-methyl, nabam, nuarimol, paclobutrazol, validamycin, picoxystrobin, bitertanol, piperalin, hymexazol, pyraclostrobin, pyrazophos, pyrifenox, pyributicarb, pyribencarb, pyrimethanil, pyroquilon, vinclozolin, ferbam, famoxadone, phenazine oxide, fenamidone, fenarimol, fenoxanil, ferimzone, fenpiclonil, fenbuconazole, fenfuram, fenpropidin, fenpropimorph, fenhexamid, folpet, phthalide, bupirimate, fuberidazole, blasticidin-S, furametpyr, furalaxyl, fluazinam, fluoxastrobin, fluopicolide, fluoroimide, fluquinconazole, fludioxonil, flusilazole, flusulfamide, flutolanil, flutriafol, flumorph, proquinazid, prochloraz, procymidone, prothioconazole, propamocarb, propiconazole, propineb, probenazole, bromuconazole, hexaconazole, benalaxyl, benomyl, pefurazoate, penconazole, pencycuron, benthiavalicarb-isopropyl, boscalid, fosetyl, polyoxins, polycarbamate, folpet, mandipropamid, mancozeb, maneb, myclobutanil, milneb, methasulfocarb, metalaxyl, metalaxyl-M, metiram, metconazole, metominostrobin, metrafenone, mepanipyrim, mepronil, TF-991, penthiopyrad, a silver compound, an inorganic copper compound, an organic copper compound, a sulfur compound, an organic zinc compound, potassium hydrogencarbonate, sodium hydrogencarbonate, fatty acid glyceride, extract from mushroom, Erwinia, pseudomonas, Bacillus, Talaromyces, Trichoderma, Fusarium.

Further, insecticidal compounds which may be mixed or used in combination in the present invention will be shown below.

1,3-dichloropropene, acrinathrin, azamethiphos, azinphos-ethyl, azinphos-methyl, acequinocyl, acetamiprid, acetoprole, acephate, azocyclotin, abamectin, amitraz, alanycarb, aldicarb, alpha-cypermethrin, allethrin, isocarbophos, isoxathion, isoprocarb, imicyafos, imidacloprid, imiprothrin, indoxacarb, esfenvalerate, ethiofencarb, ethion, ethiprole, etoxazole, etofenprox, ethoprophos, emamectin, endosulfan, empenthrin, oxamyl, oxydemeton-methyl, omethoate, sodium olate, cadusafos, cartap, carbaryl, carbosulfan, carbofuran, gamma-cyhalothrin, xylylcarb, quinalphos, kinoprene, quinomethionate, coumaphos, clothianidin, clofentezine, chromafenozide, chlorethoxyfos, chlordane, chlorpyrifos, chlorpyrifos-methyl, chlorfenapyr, chlorfenvinphos, chlorfluazuron, chlormephos, cyanophos, diafenthiuron, dienochlor, dicrotophos, dichlofenthion, cycloprothrin, dichlorvos, disulfoton, dinotefuran, cyhalothrin, cyphenothrin, cyfluthrin, diflubenzuron, cyhexatin, cyflumetofen, cypermethrin, dimethylvinphos, dimethoate, silafluofen, cyromazine, spinosad, spirodiclofen, spirotetramat, supiromesifen, sulprofos, sulfotep, zeta-cypermethrin, diazinon, tau-fluvalinate, thiacloprid, thiamethoxam, thiodicarb, thiocyclam, thiosultap-sodium, thiofanox, thiometon, tetrachlorvinphos, tetradifon, tetramethrin, tebupirimfos, tebufenozide, tebufenpyrad, tefluthrin, teflubenzuron, temephos, deltamethrin, terbufos, tralomethrin, transfluthrin, triazamate, triazophos, trichlorfon, triflumuron, trimethacarb, tolfenpyrad, naled, nitenpyram, nemadectin, novaluron, noviflumuron, hydroprene, vamidothion, parathion, parathion-methyl, halfenprox, halofenozide, bioallethrin, bioresmethrin, bistrifluoron, pyridaphenthion, bifenazate, bifenthrin, pymetrozine, pyraclofos, pyridafenthion, pyridaben, pyridalyl, pyriproxyfen, pirimicarb, pyrimidifen, pirimiphos-methyl, pyrethrins, fentrifanil, fipronil, fenazaquin, fenamiphos, fenitrothion, fenoxycarb, fenothiocarb, phenothrin, fenobucarb, fenthion, phenthoate, fenvalerate, fenpyroximate, fenbutatinoxide, fenpropathrin, butocarboxim, butoxycarboxim, buprofezin, furathiocarb, prallethrin, fluacrypyrim, flucycloxuron, flucythrinate, flusulfamide, fluvalinate, flupyrazofos, flufenoxuron, flubendiamide, flumethrin, flufenerim, prothiofos, flonicamid, propaphos, propargite, propoxur, profenofos, propetamphos, bromopropylate, beta-cypermethrin, beta-cyfluthrin, hexaflumuron, hexythiazox, heptenophos, permethrin, bensultap, bendiocarb, benfuracarb, phoxim, phosalone, fosthiazate, phosphamidon, phosmet, formetanate, phorate, machin oils, malathion, milbemectin, mecarbam, mesulfenfos, methomyl, metaldehyde, metaflumizone, metham-sodium, metham-ammonium, methamidophos, methiocarb, methidathion, methyl isothiacyanate, methoxyfenozide, methothrin, methoprene, metolcarb, mevinphos, monocrotophos, lambda-cyhalothrin, rynaxypyr, lufenuron, resmethrin, lepimectin, rotenone, CL900167, cryolite, DCIP, EPN, MEP, pyrifluquinazon, RU15525, spinetoram, XME, ZXI8901.

At the time of using the mixed herbicidal composition of the present invention, the active ingredients may be used directly, or a composition containing the desired active ingredients may be formulated, or the respective active ingredients may separately be formulated and then mixed. In application, the respective active ingredients of the composition of the present invention may be separately applied or simultaneously applied. Further, the composition of the present invention may be used as diluted with a liquid such as water or a fertilizer, or as deposited on a carrier such as a solid fertilizer, sand or soil, or on seeds or tubers of plants. With respect to the application sites, the composition of the present invention may be applied to a place where weeds will be germinated or to the plants themselves.

The herbicidal composition of the present invention exhibits excellent herbicidal effects at a low dose over a wide range from pre-emergence to post-emergence of various weeds problematic in e.g. upland fields, non-tilled crop fields or non-agricultural fields such as roads, parks, slopes, gardens or forests, including, for example, gramineous weeds such as barnyardgrass (Echinochloa crus-galli), crabgrass (Digitaria ciliaris), greenfoxtail (Setaria viridis), annual bluegrass (Poa annua), johnsongrass (Sorghum halepense), blackgrass (Alopecurus myosuroides), wild oat (Avena fatua), broadleaf weeds such as pale smartweed (Polygonum lapathifolium), slender amaranth (Amaranthus viridis), common lambsquater (Chenopodium album), common chickweed (Stellaria media), velvetleaf (Abutilon theophrasti), prickly sida (Sida spinosa), hempsesbania (Sesbania exaltata), common ragweed (Ambrosia artemisifolia), morningglory (Ipomoea spp), and perennial and annual cyperaceous weeds such as purple nutsedge (Cyperus rotundus), himekugu (Cyperus brevifolius var. leiolepis), annual sedge (Cyperus microiria) and rice flatsedge (Cyperus iria).

Particularly, it is capable of effectively controlling the main weeds in upland fields including dicotyledonous plants such as wild buckwheat (Polygonum convolvulus), pale smartweed (Polygonum lapathifolium L.), common purslane (Portulaca oleracea), common lambsquater (Chenopodium album), redroot pigweed (Amaranthus retroflexus L.), wild mustard (Kedlock) (Brassica arvensis), hempsesbania (Sesbania exaltata), sicklepod (Cassia obtusifolia), velvetleaf (Abutilon theophrasti), prickly sida (Sida spinosa), ivyleaf morningglory (Ipomoea hederacea), Jimsonweed (Datura stramonium), black nightshade (Solanum nigrum), common cocklebur (Xanthium strumarium), sunflower (Helianthus annuus), field bindweed (Convolvulus arvensis), Euphorbia helioscopia L. devils beggarticks (Bidens frondosa), common ragweed (Ambrosia artemisifolia), and monocotyledonous plants such as gramneae (Echinochloa crus-galli var. crus-galli), greenfoxtail (Setaria viridis), Foxtail grass (Setaria faberi), Setaria glauca, crabgrass (Digitaria ciliaris), goosegrass (Eleusine indica), johnsongrass (Sorghum halepense), quackgrass (Agropyron repens) and shattercane (Sorghum vulgare).

Further, it is capable of controlling annual weeds such as Rice barnyardgrass (Echinochloa oryzicola), umbrellaplant (Cyperus difformis), monochoria (Monochoria vaginalis) and false pimpernel (Lindernia pyxidaria), and perennial weeds such as water nutgrass (Cyperus serotinus), water chestnut (Eleocharis kuroguwai) and japanese bulrush (Scirpus juncoides), which germinate in paddy fields, over a wide range from pre-emergence to post-emergence.

The herbicidal composition of the present invention is highly safe to crop plants and may be used for crop plants or useful plants such as rice, wheat, barley, corn, grain sorghum, soybeans, cotton, sugar beet, rapeseed, sugarcane, lawn grass, tea, fruit trees, vegetables, flowers and trees. Here, the crop plants and useful plants include so-called genetically modified crop plants and plants showing resistance against herbicides, pests, diseases, etc., by breeding and selection, such as corn (such as PIOEER 31R87RR), soybean (such as (ASGROW SN79624 RR), cotton (such as FIBERMAX 960BR), rapeseed, sugarcane, etc., which were transformed by genetic engineering and showing resistance against herbicides, pests, diseases, etc.

The composition of the present invention is preferably applied in the form of a formulation comprising components A and B or components A, B and C in a total amount of preferably from 0.5 to 90 wt %, more preferably from 1 to 80 wt %. The formulation of the composition of the present invention may be applied as it is, but an emulsifiable concentrate, a wettable powder, a suspension formulation or the like is usually applied as its prescribed amount is diluted with water in an amount of from 10 to 2,000 liter per 1 hectare.

Further, the dose of the composition of the present invention may vary depending upon the blend ratio, the weather conditions, the type of formulation, the application season, the application method, the application site, weeds to be controlled and crop plants. However, the composition is preferably applied in a total amount of components A and B or components A, B and C being from 1 g to 10,000 g, preferably from 5 g to 4,000 g, more preferably from 10 g to 1,000, per 1 ha (hectare).

EXAMPLES

Now, the present invention will be described in further detail with reference to Examples, but it should be understood that the present invention is by no means restricted to such specific Examples. In the following Examples, “parts” means “parts by weight”.

Formulation Example 1 Wettable Powder

The following components are mixed, and the obtainable mixture is pulverized to obtain a wettable powder.

Compound No. 3-0054   5 parts Sulfentrazone   5 parts Polyoxyethyleneoctyl phenyl ether 0.5 part Sodium salt of alkylnaphthalenesulfonic 0.5 part acid formalin condensate Diatomaceous earth  12 parts Clay  77 parts

Formulation Example 2 Wettable Powder

The following components are mixed, and the obtainable mixture is pulverized to obtain a wettable powder.

Compound No. 3-0054   5 parts Sulcotrione  10 parts Atrazine  25 parts Polyoxyethyleneoctyl phenyl ether 0.5 part Sodium alkylnaphthalenesulfonic 0.5 part acid-formalin condensate Diatomaceous earth  10 parts Clay  49 parts

Formulation Example 3 Wettable Powder

The following components are mixed, and the obtainable mixture is pulverized to obtain a wettable powder.

Compound No. 3-0054   5 parts Atrazine   30 parts Benoxacor  0.5 part Polyoxyethyleneoctyl phenyl ether  0.5 part Sodium alkylnaphthalenesulfonic  0.5 part acid-formalin condensate Diatomaceous earth   12 parts Clay 51.5 parts

Formulation Example 4 Wettable Powder

The following components are mixed, and the obtainable mixture is pulverized to obtain a wettable powder.

Compound No. 3-0054   5 parts Sulcotrione   10 parts Atrazine   25 parts Benoxacor  0.5 part Polyoxyethyleneoctyl phenyl ether  0.5 part Sodium salt of alkylnaphthalenesulfonic  0.5 part acid-formalin condensate Diatomaceous earth   10 parts Clay 48.5 parts

Formulation Example 5 Granular Wettable Powder

The following components are kneaded and extrusion-granulated. The obtained granules are dried by a fluidized bed dryer to obtain a granular wettable powder.

Compound No. 3-0054   10 parts Chlorimuron  2.5 parts Sodium ligninsulfonate   5 parts Polyoxyethylene alkyl aryl ether   1 part Calcium carbonate 81.5 parts Water   10 parts

Formulation Example 6 Flowable Formulation

The following components are mixed by a high speed stirrer and pulverized by a wet pulverizer to obtain a flowable formulation.

Compound No. 3-0054 5 parts Sulcotrione 10 parts Atrazine 25 parts Benoxacor 0.5 part Sodium ligninsulfonate 2 parts Polyoxyethylene alkyl aryl ether 4 parts ammonium sulfate Polyoxyethylene alkyl aryl ether 0.5 part Xanthene gum 0.1 part Bentonite 0.5 part Ethylene glycol 10 parts Water 42.4 parts

Now, with reference to Test Examples, the effects of the herbicidal composition of the present invention will be described.

Test Example 1 TEST 1 on Herbicidal Effects Against Weeds and Phytotoxicity by Upland Soil Treatment

In a plastic pot of 14 cm in length×23 cm in width×8 cm in depth, upland soil was filled, and seeds of soybean (GLXMA), corn (ZEAMX), Ipomoea lacunosa L. (IPOLA) and velvetleaf (ABUTH) were sown and covered with soil. A wettable powder prepared in accordance with Formulation Example 1 was weighed so that the active ingredients became the prescribed amounts, diluted with water and uniformly applied to the soil surface by means of a small size spray at a rate of 500 liters per 1 hectare. Thereafter, cultivation was carried out in a greenhouse, and on the 28th day after the treatment, the herbicidal effects and phytotoxicity were examined in accordance with the standards as identified in Table 15. The results are shown in Table 16.

In the following Tables, 3-0054 represents Compound No. 3-0054.

TABLE 15 Index Herbicidal effects (growth-inhibition degree) and No. phytotoxicity 10 Herbicidal effect or phytotoxicity of 100% 9 Herbicidal effect or phytotoxicity of at least 90% and less than 100% 8 Herbicidal effect or phytotoxicity of at least 80% and less than 90% 7 Herbicidal effect or phytotoxicity of at least 70% and less than 80% 6 Herbicidal effect or phytotoxicity of at least 60% and less than 70% 5 Herbicidal effect or phytotoxicity of at least 50% and less than 60% 4 Herbicidal effect or phytotoxicity of at least 40% and less than 50% 3 Herbicidal effect or phytotoxicity of at least 30% and less than 40% 2 Herbicidal effect or phytotoxicity of at least 20% and less than 30% 1 Herbicidal effect or phytotoxicity of at least 10% and less than 20% 0 Herbicidal effect or phytotoxicity of at least 0% and less than 10%

TABLE 16 Dose Herbicidal compounds gai/ha GLXMA ZEAMX IPOLA ABUTH 3-0054 25 0 0 1 6 Pyrithiobac-sodium 25 4 10 3 8 3-0054 + pyrithiobac- 25 + 25 4 10 9 10 sodium 3-0054 100  1 1 3 8 Imazethapyr 50 0 4 4 4 3-0054 + imazethapyr 100 + 50  1 5 8 10 3-0054 100  1 1 3 8 Imazaquin 50 0 6 5 3 3-0054 + imazaquin 100 + 50  1 9 10 10 3-0054 100  1 1 3 8 Diuron 800  8 8 7 10 3-0054 + diuron 100 + 800 9 9 9 10 3-0054 50 0 0 2 7 Sulfentrazone 50 1 0 6 10 3-0054 + sulfentrazone 50 + 50 4 1 9 10 3-0054 50 0 0 2 7 Norflurazon 400  1 9 6 10 3-0054 + norflurazon  50 + 400 1 10 10 10 3-0054 100  1 1 3 8 Clomazone 200  0 7 6 10 3-0054 + clomazone 100 + 200 2 9 8 10 3-0054 50 0 0 2 7 Flufenacet 200  2 1 4 7 3-0054 + flufenacet  50 + 200 2 1 8 9 3-0054 50 0 0 2 7 Dimethenamid-P 400  2 1 5 7 3-0054 + dimethenamid-P  50 + 400 1 1 9 9 3-0054 100  1 1 3 8 Thiobencarb 1600  0 0 2 10 3-0054 + thiobencarb  100 + 1600 0 1 8 10 3-0054 100  1 1 3 8 Clopyralid 200  10 0 6 10 3-0054 + clopyralid 100 + 200 10 1 8 10

Test Example 2 Test 2 on Herbicidal Effects Against Weeds and Phytotoxicity by Upland Soil Treatment

The test on herbicidal effects and phytotoxicity against wheat (TRZAW), common chickweed (STEME) and Persian speedwell (VERPE) was carried out in the same manner as the above Test Example 1. The results are shown in Table 17.

TABLE 17 Dose Herbicidal compounds gai/ha TRZAW STEME VERPE 3-0054 18.8 0 5 7 Isoproturon 375 0 6 5 3-0054 + isoproturon 18.8 + 375 0 9 9 3-0054 18.8 0 5 7 Picolinafen 16 0 5 6 3-0054 + picolinafen 18.8 + 16  0 9 9 3-0054 18.8 0 5 7 Trifluralin 250 0 10 7 3-0054 + trifluralin 18.8 + 375 0 10 10

Test Example 3 Test 3 on Herbicidal Effects Against Weeds and Phytotoxicity by Upland Soil Treatment

The test on herbicidal effects and phytotoxicity against corn (ZEAMX), barnyardgrass (ECHCG), common chickweed (STEME) and common lambsquater (CHEAL) was carried out in the same manner as the above Test Example 1. The results are shown in Table 18.

TABLE 18 Herbicidal Dose compounds gai/ha ZEAMX ECHCG STEME CHEAL 3-0054 62.5 0 10 5 4 Prosulfocarb 1600 0 2 5 5 3-0054 + 62.5 + 1600 0 10 9 8 prosulfocarb

Test Example 4 Test 4 on Herbicidal Effects Against Weeds and Phytotoxicity by Upland Soil Treatment

The test on herbicidal effects and phytotoxicity against wheat (TRZAW), italian ryegrass (LOLMU), common chickweed (STEME) and common lambsquater (CHEAL) was carried out in the same manner as the above Test Example 1. The results are shown in Table 19.

TABLE 19 Dose Herbicidal compounds gai/ha TRZAW LOLMU STEME 3-0054 50 0 8 4 Triallate 1000 0 2 2 3-0054 + triallate 50 + 1000 0 10 6

Test Example 5 Test 5 on Herbicidal Effects Against Weeds and Phytotoxicity by Upland Soil Treatment

A field was tilled and fertilized, and seeds of Brachiaria plantaginea (BRAPL) and Sida rhombifolia (SIDRH) were sown and covered with soil. A wettable powder prepared in accordance with Formulation Example 1 was weighed so that the active ingredients became the prescribed amounts, diluted with water and uniformly applied to the soil surface by means of a sprayer at a rate of 200 liters per 1 hectare. Then, on the 60th day after the treatment, the herbicidal effects and phytotoxicity were examined in accordance with the standards as identified in Table 15. The results are shown in Table 20.

TABLE 20 Dose Herbicidal compounds gai/ha BRAPL SIDRH 3-0054 150 8 7 Ametryn 1500 7 6 3-0054 + ametryn 150 + 1500 9 9

Test Example 6 Test on Herbicidal Effects Against Weeds and Phytotoxicity by Foliage Treatment in Upland Filed

In a plastic pot of 11 cm in length×11 cm in width×11 cm in depth, the upland soil was filled, and seeds of corn (ZEAMX), soybean (GLXMA), greenfoxtail (SETVI), shattercane (SORVU), redroot pigweed (AMARE), Ipomoea lacunosa L. (IPOLA) and velvetleaf (ABUTH) were sown and covered with soil.

Then, cultivation was carried out in a greenhouse for 10 days. Then, a wettable powder prepared in accordance with Formulation Example 1 was weighed so that active ingredients would be the prescribed amounts, diluted with water and uniformly applied on the soil surface by means of a small size spray at a rate of 500 liter per 1 hectare. Thereafter, cultivation was carried out in a greenhouse, and on the 21st day after the treatment, the herbicidal effects and phytotoxicity were examined in accordance with the standards as identified in Table 15. The results are shown in Table 21.

TABLE 21 Dose Herbicidal compounds gai/ha ZEAMX GLXMA SETVI SORVU AMARE IPOLA ABUTH 3-0054 25 0 0 4 0 5 0 0 Quizalofop-ethyl 25 10 0 10 10 0 0 0 3-0054 + quizalofop- 25 + 25 10 0 10 10 6 1 0 ethyl 3-0054 100 0 0 8 6 10 1 4 Sethoxydim 100 9 0 10 9 0 0 0 3-0054 + sethoxydim 100 + 100 9 1 10 9 10 4 4 3-0054 50 0 0 7 4 7 0 0 Bispyribac-sodium 12.5 0 9 7 2 10 7 5 3-0054 + bispyribac-   50 + 12.5 1 9 8 5 10 9 7 sodium 3-0054 50 0 0 7 4 7 0 0 Pyrithiobac-sodium 50 8 9 6 6 10 9 7 3-0054 + pyrithiobac-   50 + 12.5 8 9 8 6 10 10 9 sodium 3-0054 100 0 0 8 6 10 1 4 Pyrimisulfan 25 2 2 6 8 10 9 10 3-0054 + pyrimisulfan 100 + 25  0 2 10 8 10 10 10 3-0054 25 0 0 4 0 5 0 0 Chlorimuron-ethyl 6.3 4 0 1 5 10 9 10 3-0054 + chlorimuron-  25 + 6.3 1 0 8 7 10 9 10 ethyl 3-0054 100 0 0 8 6 10 1 4 Bentazone 400 0 0 2 0 7 8 10 3-0054 + bentazone 100 + 400 0 1 9 8 10 9 10 3-0054 100 0 0 8 6 10 1 4 Paraquat 500 6 10 6 6 10 6 9 3-0054 + paraquat 100 + 500 5 8 9 9 10 8 10 3-0054 50 0 0 7 4 7 0 0 Fluthiacet-methyl 10 0 0 2 0 10 9 10 3-0054 + fluthiacet- 50 + 10 0 0 9 7 10 9 10 methyl 3-0054 50 0 0 7 4 7 0 0 Sulcotrione 25 0 6 3 3 8 5 9 3-0054 + sulcotrione 50 + 25 0 7 9 8 10 8 10 3-0054 50 0 0 7 4 7 0 0 Bilanafos 1000 9 9 9 10 10 10 10 3-0054 + bilanafos  50 + 1000 9 9 10 10 10 10 10 3-0054 50 0 0 7 4 7 0 0 Asulam 1000 8 9 9 10 10 10 10 3-0054 + asulam  50 + 1000 8 9 10 10 10 10 10 3-0054 50 0 0 7 4 7 0 0 2,4-D 200 0 9 2 1 10 10 10 3-0054 + 2,4-D  50 + 200 0 9 9 5 10 10 10

Test Example 7 Test on Effects of Reducing Phytotoxicity Against Corn by Upland Soil Treatment

In a plastic pot of 11 cm in length×11 cm in width×11 cm in depth, upland soil was filled, and seeds of corn (ZEAMX) were sown and covered with soil. A wettable powder prepared in accordance with Formulation Example 1 was weighed so that the active ingredients would be the prescribed amounts, diluted with water and uniformly applied to the soil surface by means of a small size spray at a rate of 500 liter per 1 hectare. Then, cultivation was carried out in a greenhouse, and on the 21st day after the treatment, the phytotoxicity against corn was examined in accordance with the standards as identified in Table 15. The results are shown in Table 22.

TABLE 22 Dose Herbicidal compounds gai/ha ZEAMX 3-0054 500 3 Sulcotrione 1000 1 Atrazine 2500 0 Benoxacor 50 0 3-0054 + sulcotrione + atrazine 500 + 1000 + 2500 4 3-0054 + sulcotrione + 500 + 1000 + 2500 + 50 1 atrazine + benoxacor 3-0054 500 3 Dimethenamid-p 1500 3 Benoxacor 50 0 3-0054 + dimethenamid-P 500 + 1500 5 3-0054 + dimethenamid-P + 500 + 1500 + 50 1 benoxacor

INDUSTRIAL APPLICABILITY

The herbicidal composition of the present invention is highly safe to crop plants and capable of controlling various weeds problematic in e.g. paddy fields, upland fields or non-agricultural fields over a wide range of from pre-emergency to post-emergence.

The entire disclosure of Japanese Patent Application No. 2006-344409 filed on Dec. 21, 2006 including specification, claims and summary is incorporated herein by reference in its entirety. 

1. A herbicidal composition comprising the following Component A which is at least one compound selected from the group consisting of isoxazoline derivatives of the formula I and their salts, and the following Component B, as active ingredients:

wherein each of R¹ and R² which are independent of each other, is a hydrogen atom, a C₁-C₁₀ alkyl group, a C₃-C₈ cycloalkyl group or a C₃-C₈ cycloalkyl C₁-C₃ alkyl group, or R¹ and R² together form a C₃-C₇ spiro ring together with the carbon atom to which they are bonded; each of R³ and R⁴ which are independent of each other, is a hydrogen atom, a C₁-C₁₀ alkyl group, a C₃-C₈ cycloalkyl group, or R³ and R⁴ together form a C₃-C₇ spiro ring together with the carbon atom to which they are bonded, or R¹, R², R³ and R⁴ may form a 5- to 8-membered ring together with the carbon atoms to which they are bonded; each of R⁵ and R⁶ which are independent of each other, is a hydrogen atom or a C₁-C₁₀ alkyl group; Y is a 5- or 6-membered aromatic heterocyclic or aromatic condensed heterocyclic group having an optional hetero atom selected from the group consisting of a nitrogen atom, an oxygen atom and a sulfur atom, such a heterocyclic group may be substituted by from 0 to 6 same or different groups selected from the following substituent group α, adjacent two alkyl groups, alkoxy groups, alkyl and alkoxy groups, alkyl and alkylthio groups, alkyl and alkylsulfonyl groups, alkyl and monoalkylamino groups, or alkyl and dialkylamino groups may be bonded to each other to form a 5- to 8-membered ring which may be substituted by from 1 to 4 halogen atoms, and when the hetero atom of such a heterocyclic group is a nitrogen atom, it may be oxidized to be an N-oxide; n is an integer of from 0 to 2; Substituent group α: a hydroxyl group, a thiol group, a halogen atom, a C₁-C₁₀ alkyl group, a C₁-C₁₀ alkyl group mono-substituted by an optional group selected from the following substituent group β, a C₁-C₄ haloalkyl group, a C₃-C₈ cycloalkyl group, a C₁-C₁₀ alkoxy group, a C₁-C₁₀ alkoxy group mono-substituted by an optional group selected from the following substituent group γ, a C₁-C₄ haloalkoxy group, a C₃-C₈ cycloalkyloxy group, a C₃-C₈ cycloalkyl C₁-C₃ alkyloxy group, a C₁-C₁₀ alkylthio group, a C₁-C₁₀ alkylthio group mono-substituted by an optional group selected from the following substituent group γ, a C₁-C₄ haloalkylthio group, a C₂-C₆ alkenyl group, a C₂-C₆ alkenyloxy group, a C₂-C₆ alkynyl group, a C₂-C₆ alkynyloxy group, a C₁-C₁₀ alkylsulfinyl group, a C₁-C₁₀ alkylsulfinyl group mono-substituted by an optional group selected from the following substituent group γ, a C₁-C₁₀ alkylsulfonyl group, a C₁-C₁₀ alkylsulfonyl group mono-substituted by an optional group selected from the following substituent group γ, a C₁-C₄ haloalkylsulfinyl group, a C₁-C₁₀ alkylsulfonyloxy group mono-substituted by an optional group selected from the following substituent group γ, a C₁-C₄ haloalkylsulfonyl group, a C₁-C₁₀ alkylsulfonyloxy group, a C₁-C₄ haloalkylsulfonyloxy group, a phenyl group which may be substituted, a phenoxy group which may be substituted, a phenylthio group which may be substituted, an aromatic heterocyclic group which may be substituted, an aromatic heterocyclic oxy group which may be substituted, an aromatic heterocyclic thio group which may be substituted, a phenylsulfinyl group which may be substituted, a phenylsulfonyl group which may be substituted, an aromatic heterocyclic sulfonyl group which may be substituted, a phenylsulfonyloxy group which may be substituted, an acyl group, a C₁-C₄ haloalkylcarbonyl group, a benzylcarbonyl group which may be substituted, a benzoyl group which may be substituted, a carboxyl group, a C₁-C₁₀ alkoxycarbonyl group, a benzyloxycarbonyl group which may be substituted, a phenoxycarbonyl group which may be substituted, a cyano group, a carbamoyl group (a nitrogen atom of this group may independently be substituted by a C₁-C₁₀ alkyl group or a phenyl group which may be substituted), a C₁-C₆ acyloxy group, a C₁-C₄ haloalkylcarbonyloxy group, a benzylcarbonyloxy group which may be substituted, a benzoyloxy group which may be substituted, a nitro group, and an amino group (a nitrogen atom of this group may independently be substituted by a C₁-C₁₀ alkyl group, a phenyl group which may be substituted, a C₁-C₆ acyl group, a C₁-C₄ haloalkylcarbonyl group, a benzylcarbonyl group which may be substituted, a benzoyl group which may be substituted, a C₁-C₁₀ alkylsulfonyl group, a C₁-C₄ haloalkylsulfonyl group, a benzylsulfonyl group which may be substituted, or a phenylsulfonyl group which may be substituted); Substituent Group β: a hydroxyl group, a C₃-C₈ cycloalkyl group (this group may be substituted by a halogen atom or an alkyl group), a C₁-C₁₀ alkoxy group, a C₁-C₁₀ alkylthio group, a C₁-C₁₀ alkylksulfonyl group, a C₁-C₁₀ alkoxycarbonyl group, a C₂-C₆ haloalkenyl group, an amino group (a nitrogen atom of this group may independently be substituted by a C₁-C₁₀ alkyl group, a C₁-C₆ acyl group, a C₁-C₄ haloalkylcarbonyl group, a C₁-C₁₀ alkylsulfonyl group, or a C₁-C₄ haloalkylsulfonyl group), a carbamoyl group (a nitrogen atom of this group may independently be substituted by a C₁-C₁₀ alkyl group), a C₁-C₆ acyl group, a C₁-C₄ haloalkylcarbonyl group, a C₁-C₁₀ alkoxyimino group, a cyano group, a phenyl group which may be substituted, and a phenoxy group which may be substituted; Substituent Group γ: a C₁-C₁₀ alkoxycarbonyl group, a phenyl group which may be substituted, an aromatic heterocyclic group which may be substituted, a cyano group, and a carbamoyl group (a nitrogen atom of this group may independently be substituted by a C₁-C₁₀ alkyl group); Component B: At least one compound selected from the group consisting of clodinafop-propargyl, cyhalofop-butyl, diclofop-methyl, fenoxaprop-P-ethyl, fenoxaprop-ethyl, fluazifop-butyl, fluazifop-P-butyl, haloxyfop, haloxyfop-P, haloxyfop-P-methyl, metamifop, propaquizafop, quizalofop-ethyl, quizalofop-P, quizalofop-P-ethyl, quizalofop-P-tefuryl, alloxydim, butroxydim, clethodim, cycloxydim, profoxydim, sethoxydim, tepraloxydim, tralkoxydim, aminopyralid, amidosulfuron, azimsulfuron, bensulfuron-methyl, chlorimuron-ethyl, chlorsulfuron, cinosulfuron, cyclosulfamuron, ethametsulfuron-methyl, ethoxysulfuron, flazasulfuron, flupyrsulfuron-methyl-sodium, foramsulfuron, imazosulfuron, iodosulfulon-methyl-sodium, mesosulfuron-methyl, metsulfuron-methyl, oxasulfuron, pyrazosulfuron-ethyl, sulfometuron-methyl, sulfosulfuron, triasulfuron, tribenuron-methyl, trifloxysulfuron-sodium, triflusulfuron-methyl, tritosulfuron, imazamethabenz-methyl, imazamox, imazapic, imazaquin, diclosulam, florasulam, metosulam, penoxsulam, bispyribac-sodium, pyribenzoxim, pyriftalid, pyriminobac-methyl, pyrithiobac-sodium, flucarbazone-sodium, ametryn, dimethametryn, desmetryne, prometryn, propazine, simetryn, terbumeton, terbuthylazine, terbutryn, trietazine, hexazinone, metamitron, amicarbazone, bromacil, lenacil, terbacil, chloridazon, desmedipham, phenmedipham, chlorbromuron, chlorotoluron, chloroxuron, dimefuron, diuron, ethidimuron, fenuron, fluometuron, isoproturon, isouron, methabenzthiazuron, metobromuron, metoxuron, monolinuron, neburon, siduron, tebuthiuron, pentanochlor, propanil, ioxynil, bromofenoxim, bentazone, pyridate, pyridafol, diquat, paraquat, acifluorfen, bifenox, chlomethoxyfen, fluoroglycofen-ethyl, fomesafen, lactofen, oxyfluorfen, cinidon-ethyl, flumiclorac-pentyl, fluthiacet-methyl, thidiazimin, oxadiargyi, oxadiazon, azafenidin, sulfentrazone, butafenacil, benzfendizone, pentoxazone, pyraflufen-ethyl, fluazolate, pyraclonil, profluazol, flufenpyr-ethyl, norflurazon, sulcotrione, isoxachlortole, benzofenap, pyrazolynate, pyrazoxyfen, amitrole, clomazone, picolinafen, aclonifen, fluometuron, beflubutamid, fluridone, fluorochloridone, flurtamone, benzobicyclon, sulfosate, bilanafos, asulam, benfluralin, butralin, dinitramine, ethalfluralin, oryzalin, trifluralin, dithiopyr, thiazopyr, chlorthal-dimethyl, butamifos, amiprophos-methyl, propyzamide, tebutam, carbetamide, chlorpropham, propham, acetochlor, alachlor, butachlor, dimethachlor, dimethenamid, metazachlor, pethoxamid, pretilachlor, propachlor, propisochlor, S-metolachlor, thenylchlor, flufenacet, mefenacet, fentrazamide, diphenamid, naproanilide, napropamide, anilofos, cafenstrole, piperophos, dichlobenil, chlorthiamid, isoxaben, flupoxame, dinoterb, DNOC, dinoterb, butylate, cycloate, dimepiperate, EPTC, esprocarb, molinate, orbencarb, pebulate, prosulfocarb, thiobencarb, tiocarbazil, triallate, vernolate, benfuresate, ethofumesate, TCA, dalapon, flupropanate, bensulide, clomeprop, 2,4-D, 2,4-DB, dichlorprop, dichlorprop-P, MCPA, MCPB, mecoprop, mecoprop-P, MCPA-thioethyl, 2,3,6-TBA, chloramben, fluoroxypyr, picloram, triclopyr, quinclorac, benazolin, diflufenzopyr, naptalam, difenzoquat, flamprop-M, bromobutide, oxaziclomefone, cinmethylin, etobenzanid, fosamine, cumyluron, daimuron, methyl-dimuron, indanofan, pyributicarb, pyrimisulfan, HC-252, forchlorfenuron, thidiazuron, pyrasulfotole, maleic hydrazide, diflumetorim, fenclorim, ancymidol, flurprimidol, chlormequat chloride, mepiquatchloride, quinmerac, propoxycarbazone-sodium, propoxycarbazone, flucetosulfuron, tefuryltrion, karbutilate, metobenzuron, prodiamine, pyroxsulam, triaziflam, pinoxaden, bencarbazone, trinexapac-ethyl and prohexadione-calcium.
 2. The herbicidal composition according to claim 1, wherein Component A is a compound of the formula [I] wherein Y is a 5- or 6-membered aromatic heterocyclic group having a hetero atom selected from the group consisting of a nitrogen atom, an oxygen atom and a sulfur atom.
 3. The herbicidal composition according to claim 1, wherein Component A is a compound of the formula [I] wherein Y is a thienyl group, a pyrazolyl group, an isoxazolyl group, an isothiazolyl group, a pyridyl group or a pyrimidinyl group.
 4. The herbicidal composition according to claim 1, wherein Component A is a compound of the formula [I] wherein Y is a thiophen-3-yl group, a pyrazol-4-yl group, a pyrazol-5-yl group, an isoxazol-4-yl group, an isothiazol-4-yl group, a pyridin-3-yl group or a pyrimidin-5-yl group.
 5. The herbicidal composition according to claim 1, wherein Component A is a compound of the formula [I] wherein Y is a pyrazol-4-yl group wherein the pyrazole ring is substituted at the 3- and 5-positions by the substituent group α and at the 1-position by a hydroxyl group, a C₁-C₁₀ alkyl group, a C₁-C₁₀ alkyl group mono-substituted by an optional group selected from the substituent group β, a C₁-C₄ haloalkyl group, a C₃-C₈ cycloalkyl group, a C₂-C₆ alkenyl group, a C₂-C₆ alkynyl group, a C₁-C₁₀ alkylsulfinyl group, a C₁-C₁₀ alkylsulfonyl group, a C₁-C₁₀ alkylsulfonyloxy group mono-substituted by an optional group selected from the substituent group γ, a C₁-C₄ haloalkylsulfonyl group, a phenyl group which may be substituted, an aromatic heterocyclic group which may be substituted, a phenylsulfonyl group which may be substituted, an aromatic heterocyclic sulfonyl group which may be substituted, an acyl group, a C₁-C₄ haloalkylcarbonyl group, a benzylcarbonyl group which may be substituted, a benzoyl group which may be substituted, a carboxyl group, a C₁-C₁₀ alkoxycarbonyl group, a benzyloxycarbonyl group which may be substituted, a phenoxycarbonyl group which may be substituted, a carbamoyl group (a nitrogen atom of this group may independently be substituted by a C₁-C₁₀ alkyl group or a phenyl group which may be substituted), or an amino group (a nitrogen atom of this group may independently be substituted by a C₁-C₁₀ alkyl group, a phenyl group which may be substituted, an acyl group, a C₁-C₄ haloalkylcarbonyl group, a benzylcarbonyl group which may be substituted, a benzoyl group which may be substituted, a C₁-C₁₀ alkylsulfonyl group, a C₁-C₄ haloalkylsulfonyl group, a benzylsulfonyl group which may be substituted, or a phenylsulfonyl group which may be substituted).
 6. The herbicidal composition according to claim 1, wherein Component A is a compound of the formula [I] wherein Y is a pyrazol-5-yl group wherein the pyrazole ring is substituted at the 4-position by the substituent group α and at the 1-position by a hydroxyl group, a C₁-C₁₀ alkyl group, a C₁-C₁₀ alkyl group mono-substituted by an optional group selected from the substituent group β, a C₁-C₄ haloalkyl group, a C₃-C₈ cycloalkyl group, a C₂-C₆ alkenyl group, a C₂-C₆ alkynyl group, a C₁-C₁₀ alkylsulfinyl group, a C₁-C₁₀ alkylsulfonyl group, a C₁-C₁₀ alkylsulfonyl group mono-substituted by an optional group selected from the substituent group γ, a C₁-C₄ haloalkylsulfonyl group, a phenyl group which may be substituted, an aromatic heterocyclic group which may be substituted, a phenylsulfonyl group which may be substituted, an aromatic heterocyclic sulfonyl group which may be substituted, an acyl group, a C₁-C₄ haloalkylcarbonyl group, a benzylcarbonyl group which may be substituted, a benzoyl group which may be substituted, a carboxyl group, a C₁-C₁₀ alkoxycarbonyl group, a benzyloxycarbonyl group which may be substituted, a phenoxycarbonyl group which may be substituted, a carbamoyl group (a nitrogen atom of this group may independently be substituted by a C₁-C₁₀ alkyl group or a phenyl group which may be substituted), or an amino group (a nitrogen atom of this group may independently be substituted by a C₁-C₁₀ alkyl group, a phenyl group which may be substituted, an acyl group, a C₁-C₄ haloalkylcarbonyl group, a benzylcarbonyl group which may be substituted, a benzoyl group which may be substituted, a C₁-C₁₀ alkylsulfonyl group, a C₁-C₄ haloalkylsulfonyl group, a benzylsulfonyl group which may be substituted, or a phenylsulfonyl group which may be substituted).
 7. The herbicidal composition according to claim 1, wherein Component A is a compound of the formula [I] wherein each of R¹ and R² is a methyl group, each of R³ and R⁴ is a hydrogen atom, and Y is a pyrazol-4-yl group wherein the pyrazole ring is substituted at the 1-, 3- and 5-positions independently by a C₁-C₄ alkyl group, a C₁-C₄ haloalkyl group or a C₁-C₄ haloalkoxy group.
 8. The herbicidal composition according to claim 1, wherein Component A is 3-[(5-difluoromethoxy-1-methyl-3-trifluoromethylpyrazol-4-yl)methylsulfonyl]-4,5-dihydro-5,5-dimethylisoxazole.
 9. The herbicidal composition according to claim 1, wherein Component B is at least one compound selected from the group consisting of quizafop-ethyl, quizafop-P-ethyl, sethoxydim, pyrithiobac-sodium, bispyribac-sodium, pyrimisulfan, imazethapyr, imazaquin, chlorimuron-ethyl, diuron, bentazone, paraquat, sulfentrazone, fluthiacet-methyl, sulcotrione, norflurazon, clomazone, bilanafos, asulam, flufenacet, dimethenamid-P, prosulfocarb, thiobencarb, 2,4-D, clopyralid, ametryn, isoproturon, picolinafen, trifluralin, acetochlor and triallate.
 10. The herbicidal composition according to claim 1, wherein Component B is imazaquin, diuron, sulfentrazone, sulcotrione, norflurazon, clomazone, dimethenamid-P, prosulfocarb, isoproturon, trifluralin or triallate.
 11. A herbicidal composition comprising the herbicidal composition as defined in claim 1 and the following Component C, as active ingredients: Component C: At least one compound selected from the group consisting of atrazine, simazine, cyanazine, isoxaflutole, mesotrione, flumetsulam, imazethapyr, imazapyr, dicamba, clopyralid, prosulfuron, halosulfuron-methyl, rimsulfuron, bentazon, carfentrazone-ethyl, metribuzin, thifensulfuron-methyl, nicosulfuron, primisulfuron, cloransulam-methyl, glufosinate, glyphosate, sulfosate, pendimethalin, linuron, prometryne, diflufenican, flumioxazin, metolachlor, their salts and analogues.
 12. A herbicidal composition comprising the herbicidal composition as defined in claim 1 and the following Component D, as active ingredients: Component D: At least one compound selected from the group consisting of Cloquintocet-Mexyl, fenchlorazole, fenchlorazole-ethyl, mefenpyr, mefenpyr-diethyl, isoxadifen, isoxadifen-ethyl, furilazole, benoxacor, dichlormid, MON4660, oxabetrinil, cyometrinil, fenclorim, cyprosulfamide, naphthalic anhydride, Flurazole, their salts and analogues.
 13. A herbicidal composition comprising the herbicidal composition as defined in claim 11 and the following Component D, as active ingredients: Component D: At least one compound selected from the group consisting of Cloquintocet-Mexyl, fenchlorazole, fenchlorazole-ethyl, mefenpyr, mefenpyr-diethy, isoxadifen, isoxadifen-ethyl, furilazole, benoxacor, dichlormid, MON4660, oxabetrinil, cyometrinil, fenclorim, cyprosulfamide, naphthalic anhydride, Flurazole, their salts and analogues.
 14. The herbicidal composition according to claim 1, wherein the weight ratio of Component A:Component B is from 1:0.001 to 1:100.
 15. The herbicidal composition according to claim 11, wherein the weight ratio of Component A:Component B:Component C is from 1:0.001:0.001 to 1:100:100.
 16. The herbicidal composition according to claim 12, wherein the weight ratio of Component A:Component B:Component D is from 1:0.001:0.001 to 1:100:100.
 17. The herbicidal composition according to claim 13, wherein the weight ratio of Component A:Component B:Component C:Component D is from 1:0.001:0.001:0.001 to 1:100:100:100.
 18. A herbicidal composition comprising the herbicidal composition as defined in claim 1 in an amount to show a herbicidal activity and at least one inert liquid carrier and/or solid carrier and, if necessary, further containing at least one surfactant.
 19. A method for preparing the herbicidal composition as defined in claim 1, which comprises mixing Component A and Component B; if necessary, Component C and/or Component D; at least one inert liquid carrier and/or solid carrier; and a surfactant.
 20. A method for controlling unwanted plants, which comprises applying the active ingredients contained in the herbicidal composition as defined in claim 1, simultaneously or dividedly, before, during and/or after germination of the unwanted plants. 